With this error information we cannot explain what goes wrong.
You need to describe a bit the scenario with some screenshots.
Probably you have more errors in you console where also is described on which page/button/MF… the error occured.
these are the errors it showing
i will share the second error in detail
action button 1 is save button….then how to debug
stacktrace of the error
You have created a Java Action called ADD_STRING_JA and you are trying to call this, however you have not implemented code inside the action. By default a Java Action will throw an exception saying “Java action was not implemented”. You need to remove the “throw” line from your Java code.
See my answer to your previous question as it should have the correct code to use in your executeAction and it removes this exception.
Hope this helps.