custom java action render html to image

0
Hi everybody, upfront I am quite new to coding in java. (But I tried hard sovling this on my own….. Did not succeed) Please note my mendix studio version is 7.23.19  Ok here is what I want to do:  I want to render a string of html into a image and “save” that to  a image object. So here is what i have done. I create a new entity (just a copy of the image in System) in the domain model of the module    I also set the access rules   Next I have set up my microflow where a create a new object of the entity Testimage and hand it to my costum java call. I also hand in a string of html Here now my java code:   package siedoc_2.actions; import com.mendix.systemwideinterfaces.core.IContext; import com.mendix.webui.CustomJavaAction; import com.mendix.systemwideinterfaces.core.IMendixObject; import gui.ava.html.image.generator.HtmlImageGenerator; import java.awt.image.RenderedImage; import java.io.*; import javax.imageio.ImageIO; public class Test_Java_call3 extends CustomJavaAction<java.lang.Boolean> { private java.lang.String Html_String; private IMendixObject __PictureParameter1; private siedoc_2.proxies.TestImage PictureParameter1; public Test_Java_call3(IContext context, java.lang.String Html_String, IMendixObject PictureParameter1) { super(context); this.Html_String = Html_String; this.__PictureParameter1 = PictureParameter1; } @java.lang.Override public java.lang.Boolean executeAction() throws Exception { this.PictureParameter1 = __PictureParameter1 == null ? null : siedoc_2.proxies.TestImage.initialize(getContext(), __PictureParameter1); // BEGIN USER CODE HtmlImageGenerator hig = new HtmlImageGenerator(); hig.loadHtml(Html_String); hig.saveAsImage("hello-world.png"); File imageFile = new File("hello-world.png"); InputStream targetStream = new FileInputStream(imageFile); PictureParameter1.setContents( getContext(), targetStream, imageFile.length()); return true; // END USER CODE } /** * Returns a string representation of this action */ @java.lang.Override public java.lang.String toString() { return "Test_Java_call3"; } // BEGIN EXTRA CODE // END EXTRA CODE } However the workflow return an error when execuded in the  app. (I will add the error message at the end because it is quite long)   First question: Do I use the getContext() here corretly in  PictureParameter1.setContents( getContext(), targetStream, imageFile.length()); Second question: If the upper code is correct, then I guess the problem lies with  hig.saveAsImage("hello-world.png"); File imageFile = new File("hello-world.png"); as I am not allowed to just save to the “server”. Is there a way make this save possible or use some kind of temporary file or buffer?   Third question: Am I complety wrong and the problem is somewhere else? Or is there a better way to this? Thanks a lot!!!!!   Here the complet error message:   An error has occurred while handling the request. [User 'MxAdmin' with session id '0176e5a1-XXXX-XXXX-XXXX-XXXXXXXX557e' and roles 'TechnicalAdministrator'] -------- com.mendix.core.CoreException: com.mendix.modules.microflowengine.MicroflowException: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.connectionbus.ConnectionBusRuntimeException: com.mendix.basis.connectionbus.ConnectionBusException: Exception occurred while updating data. (SQL State: 42501, Error Code: -5501) Detail Message: org.hsqldb.HsqlException: user lacks privilege or object not found: contents at SieDoc_2.Test_HTML (JavaAction : 'Test_Java_call3') Advanced stacktrace: at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:389) Caused by: com.mendix.modules.microflowengine.MicroflowException: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.connectionbus.ConnectionBusRuntimeException: com.mendix.basis.connectionbus.ConnectionBusException: Exception occurred while updating data. (SQL State: 42501, Error Code: -5501) Detail Message: org.hsqldb.HsqlException: user lacks privilege or object not found: contents at SieDoc_2.Test_HTML (JavaAction : 'Test_Java_call3') Advanced stacktrace: at com.mendix.modules.microflowengine.MicroflowUtil.processException(MicroflowUtil.java:146) Caused by: com.mendix.core.CoreException: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.connectionbus.ConnectionBusRuntimeException: com.mendix.basis.connectionbus.ConnectionBusException: Exception occurred while updating data. (SQL State: 42501, Error Code: -5501) Detail Message: org.hsqldb.HsqlException: user lacks privilege or object not found: contents at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:418) Caused by: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.connectionbus.ConnectionBusRuntimeException: com.mendix.basis.connectionbus.ConnectionBusException: Exception occurred while updating data. (SQL State: 42501, Error Code: -5501) Detail Message: org.hsqldb.HsqlException: user lacks privilege or object not found: contents at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:159) Caused by: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.connectionbus.ConnectionBusRuntimeException: com.mendix.basis.connectionbus.ConnectionBusException: Exception occurred while updating data. (SQL State: 42501, Error Code: -5501) Detail Message: org.hsqldb.HsqlException: user lacks privilege or object not found: contents at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:36) Caused by: com.mendix.connectionbus.ConnectionBusRuntimeException: com.mendix.basis.connectionbus.ConnectionBusException: Exception occurred while updating data. (SQL State: 42501, Error Code: -5501) Detail Message: org.hsqldb.HsqlException: user lacks privilege or object not found: contents at com.mendix.connectionbus.ConnectionBusImpl.commitBinaryField(ConnectionBusImpl.java:700) Caused by: com.mendix.basis.connectionbus.ConnectionBusException: Exception occurred while updating data. (SQL State: 42501, Error Code: -5501) Detail Message: org.hsqldb.HsqlException: user lacks privilege or object not found: contents at com.mendix.connectionbus.connections.jdbc.JdbcDataStore.getCorrectException(JdbcDataStore.java:736) Caused by: java.sql.SQLSyntaxErrorException: user lacks privilege or object not found: contents in statement [UPDATE "siedoc_2$testimage" SET "contents" = ? WHERE "id" = ?] at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source) at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source) at org.hsqldb.jdbc.JDBCPreparedStatement.<init>(Unknown Source) at org.hsqldb.jdbc.JDBCConnection.prepareStatement(Unknown Source) at org.apache.commons.dbcp2.DelegatingConnection.prepareStatement(DelegatingConnection.java:288) at org.apache.commons.dbcp2.DelegatingConnection.prepareStatement(DelegatingConnection.java:288) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.withPreparedStatement(JdbcDataStoreBase.scala:565) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.$anonfun$execModificationQueries$1(JdbcDataStoreBase.scala:341) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.$anonfun$execModificationQueries$1$adapted(JdbcDataStoreBase.scala:341) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.$anonfun$executeWithUcViolationHandling$1(JdbcDataStoreBase.scala:510) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at scala.util.Try$.apply(Try.scala:213) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.executeWithUcViolationHandling(JdbcDataStoreBase.scala:510) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.doModificationQueries$1(JdbcDataStoreBase.scala:344) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.execModificationQueries(JdbcDataStoreBase.scala:354) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.execUpdateQueries(JdbcDataStoreBase.scala:271) at com.mendix.connectionbus.connections.jdbc.JdbcDataStore.store(JdbcDataStore.java:494) at com.mendix.connectionbus.store.EntityStorer.handleRequest(EntityStorer.java:132) at com.mendix.connectionbus.store.EntityStorer.store(EntityStorer.java:72) at com.mendix.connectionbus.RequestAnalyzer.doRequest(RequestAnalyzer.java:78) at com.mendix.connectionbus.ConnectionBusImpl.doRequest(ConnectionBusImpl.java:488) at com.mendix.connectionbus.ConnectionBusImpl.commitBinaryField(ConnectionBusImpl.java:698) at com.mendix.basis.objectmanagement.member.MendixBinaryImpl.storeValue(MendixBinaryImpl.java:137) at system.proxies.FileDocument.setContents(FileDocument.java:364) at siedoc_2.actions.Test_Java_call3.executeAction(Test_Java_call3.java:45) at siedoc_2.actions.Test_Java_call3.executeAction(Test_Java_call3.java:20) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55) at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:150) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:155) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:414) at com.mendix.modules.microflowengine.actions.actioncall.JavaAction.execute(JavaAction.scala:56) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:201) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:157) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55) at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:150) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:155) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:383) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:398) at com.mendix.webui.actions.client.ExecuteMicroflowAction.runMicroflow(ExecuteMicroflowAction.scala:46) at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:32) at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:15) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$4(RegularClientAction.scala:46) at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:35) at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:23) at com.mendix.webui.actions.client.RegularClientAction.withState(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:44) at scala.util.Try$.apply(Try.scala:213) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:44) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:42) at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$6(ContextHandling.scala:47) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at com.mendix.basis.actionmanagement.IMonitoredAction$$anon$1.execute(IMonitoredAction.scala:47) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor(IMonitoredAction.scala:49) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor$(IMonitoredAction.scala:25) at com.mendix.webui.requesthandling.helpers.ContextHandling$ClientMonitoredAction.monitor(ContextHandling.scala:59) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:47) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:27) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:24) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:19) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:42) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest(ProfileHandling.scala:14) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest$(ProfileHandling.scala:10) at com.mendix.webui.actions.client.RegularClientAction.profileRequest(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:39) at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:124) at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:101) at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:40) at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:72) at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:69) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:75) at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.java:953) at com.mendix.m2ee.appcontainer.server.handler.RuntimeHandler.service(RuntimeHandler.java:42) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:763) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:551) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1610) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1369) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:489) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1580) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1284) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.Server.handle(Server.java:501) at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:556) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:272) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938) at java.lang.Thread.run(Thread.java:748) Caused by: org.hsqldb.HsqlException: user lacks privilege or object not found: contents at org.hsqldb.error.Error.error(Unknown Source) at org.hsqldb.error.Error.error(Unknown Source) at org.hsqldb.ParserDQL.XreadTargetSpecification(Unknown Source) at org.hsqldb.ParserDML.readSetClauseList(Unknown Source) at org.hsqldb.ParserDML.compileUpdateStatement(Unknown Source) at org.hsqldb.ParserCommand.compilePart(Unknown Source) at org.hsqldb.ParserCommand.compileStatement(Unknown Source) at org.hsqldb.Session.compileStatement(Unknown Source) at org.hsqldb.StatementManager.compile(Unknown Source) at org.hsqldb.Session.execute(Unknown Source) at org.hsqldb.jdbc.JDBCPreparedStatement.<init>(Unknown Source) at org.hsqldb.jdbc.JDBCConnection.prepareStatement(Unknown Source) at org.apache.commons.dbcp2.DelegatingConnection.prepareStatement(DelegatingConnection.java:288) at org.apache.commons.dbcp2.DelegatingConnection.prepareStatement(DelegatingConnection.java:288) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.withPreparedStatement(JdbcDataStoreBase.scala:565) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.$anonfun$execModificationQueries$1(JdbcDataStoreBase.scala:341) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.$anonfun$execModificationQueries$1$adapted(JdbcDataStoreBase.scala:341) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.$anonfun$executeWithUcViolationHandling$1(JdbcDataStoreBase.scala:510) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at scala.util.Try$.apply(Try.scala:213) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.executeWithUcViolationHandling(JdbcDataStoreBase.scala:510) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.doModificationQueries$1(JdbcDataStoreBase.scala:344) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.execModificationQueries(JdbcDataStoreBase.scala:354) at com.mendix.connectionbus.connections.jdbc.JdbcDataStoreBase.execUpdateQueries(JdbcDataStoreBase.scala:271) at com.mendix.connectionbus.connections.jdbc.JdbcDataStore.store(JdbcDataStore.java:494) at com.mendix.connectionbus.store.EntityStorer.handleRequest(EntityStorer.java:132) at com.mendix.connectionbus.store.EntityStorer.store(EntityStorer.java:72) at com.mendix.connectionbus.RequestAnalyzer.doRequest(RequestAnalyzer.java:78) at com.mendix.connectionbus.ConnectionBusImpl.doRequest(ConnectionBusImpl.java:488) at com.mendix.connectionbus.ConnectionBusImpl.commitBinaryField(ConnectionBusImpl.java:698) at com.mendix.basis.objectmanagement.member.MendixBinaryImpl.storeValue(MendixBinaryImpl.java:137) at system.proxies.FileDocument.setContents(FileDocument.java:364) at siedoc_2.actions.Test_Java_call3.executeAction(Test_Java_call3.java:45) at siedoc_2.actions.Test_Java_call3.executeAction(Test_Java_call3.java:20) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55) at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:150) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:155) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:414) at com.mendix.modules.microflowengine.actions.actioncall.JavaAction.execute(JavaAction.scala:56) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:201) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:157) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55) at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:150) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:155) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:383) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:398) at com.mendix.webui.actions.client.ExecuteMicroflowAction.runMicroflow(ExecuteMicroflowAction.scala:46) at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:32) at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:15) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$4(RegularClientAction.scala:46) at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:35) at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:23) at com.mendix.webui.actions.client.RegularClientAction.withState(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:44) at scala.util.Try$.apply(Try.scala:213) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:44) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:42) at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$6(ContextHandling.scala:47) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at com.mendix.basis.actionmanagement.IMonitoredAction$$anon$1.execute(IMonitoredAction.scala:47) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor(IMonitoredAction.scala:49) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor$(IMonitoredAction.scala:25) at com.mendix.webui.requesthandling.helpers.ContextHandling$ClientMonitoredAction.monitor(ContextHandling.scala:59) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:47) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:27) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:24) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:19) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:42) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest(ProfileHandling.scala:14) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest$(ProfileHandling.scala:10) at com.mendix.webui.actions.client.RegularClientAction.profileRequest(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:39) at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:124) at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:101) at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:40) at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:72) at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:69) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:75) at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.java:953) at com.mendix.m2ee.appcontainer.server.handler.RuntimeHandler.service(RuntimeHandler.java:42) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:763) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:551) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1610) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1369) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:489) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1580) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1284) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.Server.handle(Server.java:501) at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:556) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:272) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938) at java.lang.Thread.run(Thread.java:748)  
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Instead of calling PictureParameter1.setContents(), try using the storeFileDocumentContent() method in the Core API. 

https://apidocs.rnd.mendix.com/8/runtime/com/mendix/core/Core.html#storeFileDocumentContent(com.mendix.systemwideinterfaces.core.IContext,com.mendix.systemwideinterfaces.core.IMendixObject,java.lang.String,java.io.InputStream)

Hope this helps

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