java - 500 internal server error with GWT Tomcat Apache -

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i getting following error on tomcat apache server running gwt web application. 500 internal server error call failed on server; see server log details

the server log contains:

jul 22, 2015 8:05:51 org.apache.catalina.core.applicationcontext log severe: exception while dispatching incoming rpc call org.hibernate.assertionfailure: null id in com.simulconsult.test.shared.model.script entry (don't flush session after exception occurs)     @ org.hibernate.event.def.defaultflushentityeventlistener.checkid(defaultflushentityeventlistener.java:82)     @ org.hibernate.event.def.defaultflushentityeventlistener.getvalues(defaultflushentityeventlistener.java:190)     @ org.hibernate.event.def.defaultflushentityeventlistener.onflushentity(defaultflushentityeventlistener.java:147)     @ org.hibernate.event.def.abstractflushingeventlistener.flushentities(abstractflushingeventlistener.java:219)     @ org.hibernate.event.def.abstractflushingeventlistener.flusheverythingtoexecutions(abstractflushingeventlistener.java:99)     @ org.hibernate.event.def.defaultflusheventlistener.onflush(defaultflusheventlistener.java:50)     @ org.hibernate.impl.sessionimpl.flush(sessionimpl.java:1216)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:62)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)     @ java.lang.reflect.method.invoke(method.java:497)     @ org.hibernate.context.threadlocalsessioncontext$transactionprotectionwrapper.invoke(threadlocalsessioncontext.java:345)     @ com.sun.proxy.$proxy61.flush(unknown source)     @ net.sf.gilead.core.hibernate.hibernateutil.flushifneeded(hibernateutil.java:979)     @ net.sf.gilead.core.persistentbeanmanager.clone(persistentbeanmanager.java:227)     @ net.sf.gilead.gwt.gileadrpchelper.parsereturnvalue(gileadrpchelper.java:157)     @ net.sf.gilead.gwt.persistentremoteservice.processcall(persistentremoteservice.java:203)     @ com.simulconsult.test.server.hibernatebasedservice.processcall(hibernatebasedservice.java:68)     @ com.google.gwt.user.server.rpc.remoteserviceservlet.processpost(remoteserviceservlet.java:305)     @ com.google.gwt.user.server.rpc.abstractremoteserviceservlet.dopost(abstractremoteserviceservlet.java:62)     @ javax.servlet.http.httpservlet.service(httpservlet.java:647)     @ javax.servlet.http.httpservlet.service(httpservlet.java:728)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:305)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210)     @ org.apache.tomcat.websocket.server.wsfilter.dofilter(wsfilter.java:52)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:243)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210)     @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:222)     @ org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:123)     @ org.apache.catalina.authenticator.authenticatorbase.invoke(authenticatorbase.java:502)     @ org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:171)     @ org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:100)     @ org.apache.catalina.valves.accesslogvalve.invoke(accesslogvalve.java:953)     @ org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:118)     @ org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:409)     @ org.apache.coyote.http11.abstracthttp11processor.process(abstracthttp11processor.java:1044)     @ org.apache.coyote.abstractprotocol$abstractconnectionhandler.process(abstractprotocol.java:607)     @ org.apache.tomcat.util.net.jioendpoint$socketprocessor.run(jioendpoint.java:313)     @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1142)     @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:617)     @ java.lang.thread.run(thread.java:745)

the same code , deployment works without error on local tomcat apache server, not on of web host provider.

thoughts?

apparently error logged related script object not real problem. issue neglected update database table schema @ our web host provider site.


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