Hi
I have the same message, with 1.6.2.war and after upgrade to 1.8.0.war under tomcat 7, and apache in reverse proxy.
When i create a ticket test with admin user and a specific, when i click on create, i'm not redirect and see this message in the catalina.out
Any hint to debug the problem ?
Regards,
Christophe
2016-11-17 09:09:39 [ERROR]
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1003)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
2016-11-17 09:09:39 [ERROR] unexpected exception when handling another exception: null
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1003)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)