CNTR0019E: EJB threw an unexpected (non-declared) exception during invocation
CNTR0019E: EJB threw an unexpected (non-declared) exception during invocation of method "requestLocal". Exception data: javax.ejb.EJBException: session bean post construct failure; nested exception is: java.lang.Exception: See nested Throwable
java.lang.Exception: See nested Throwable
请问这是什么错误, 怎么解决?