V6.8.0 Flowable-Ui-Apps rest call - Unhandled exception org.springframework.transaction.UnexpectedRollbackException: Transaction rolled back because it has been marked as rollback-only at

1

We have migrated from V6.4.1 to V6.8.0, deployed Ui-Apps war. Migration successful, But we are frequently hitting below error for selective rest calls , However retry works such failure, debug logs not showing actual error , always shows below rollback Error. just wondering new version may have known issue? Please let me know if you see similar issue with 6.8.0.

Rest call in question:

  1. https://abc:7082/flowable-ui/process-api/runtime/process-instances
  2. https://abc:7082/flowable-ui/form/addon/form-data/{taskId}
    3)https://abc:7082/flowable-ui/process-api/runtime/executions/{taskId}

ERROR:

org.springframework.transaction.UnexpectedRollbackException: Transaction rolled back because it has been marked as rollback-only
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback(AbstractPlatformTransactionManager.java:870) ~[spring-tx-5.3.24.jar:5
.3.24]
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:707) ~[spring-tx-5.3.24.jar:5.3.24]
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:152) ~[spring-tx-5.3.24.jar:5.3.24]
at org.flowable.common.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:57) ~[flowable-spring-common-6.8.0.jar:6.8.0]
at org.flowable.common.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:30) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:56) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:51) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.RuntimeServiceImpl.startProcessInstance(RuntimeServiceImpl.java:792) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.runtime.ProcessInstanceBuilderImpl.start(ProcessInstanceBuilderImpl.java:265) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.rest.service.api.runtime.process.ProcessInstanceCollectionResource.createProcessInstance(ProcessInstanceCollectionResource.java:328) ~[flowable-res
t-6.8.0.jar:6.8.0]