These kinds of errors are usually caused by conflicting versions of the same Java libraries in the userlib folder of your project. Looking at the error message, you probably have multiple versions of the Bouncy Castle libraries. If you open the userlib folder, you probably have bc*-jdk15on-<version_number>.jar files with multiple versions numbers. Usually it’s version 150 and 164. If you delete the files for version 150 and leave the files for 164 and re-run your app, the issue should be resolved.
Try by downloading the encryption module V.2.0.0 from the app store.
Solution is removing those 3 JAR files from userlib, as mentioned in the v2.0.1 notes.