UserTransactionImple cannot be cast to class javax.transaction.TransactionManager after migration from wildfly to tomcat

Q&A
1

After the migration from a wildfly-installation to a tomcat-installation we get this exception, when opening a task:

 

When we just call the businessdata-API we get this Exception in the Browser:

{"exception":"class org.bonitasoft.engine.exception.BonitaRuntimeException","message":"USERNAME=VISCOTEC\\u005cswittwer | java.lang.ClassCastException: class com.arjuna.ats.internal.jta.transaction.arjunacore.UserTransactionImple cannot be cast to class javax.transaction.TransactionManager (com.arjuna.ats.internal.jta.transaction.arjunacore.UserTransactionImple and javax.transaction.TransactionManager are in unnamed module of loader java.net.URLClassLoader @5bc79255)"}

 

 

Also our forms are without any data... it looks like, the portal cant load the bdm... 

 

This is our third attemp to migrate our productive environment... We need help!!! 

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