Some of users of my wf-app seem to face an error 500 while working. The errors show a viewExpiredException as cause of the problem. Generally this points to a session timeout issue. But as the user fires several request within seconds it doesn't make much sense, that one of the requests should fail with error 500 while others can be served as expected. Unfortunately the behaviour is not 100% reproducible on any dialog. The logs expose the problem for several users but there is no clear pattern to find out which behaviour leads to these errors. Do I have any chance to isolate the real issue behind this these error 500 logs?

Some of users of my wf-app seem to face an error 500 while working. The errors show a viewExpiredException as cause of the problem. Generally this points to a session timeout issue. But as the user fires several request within seconds it doesn't make much sense, that one of the requests should fail with error 500 while others can be served as expected. Unfortunately the behaviour is not 100% reproducible on any dialog. The logs expose the problem for several users but there is no clear pattern to find out which behaviour leads to these errors. Do I have any chance to isolate the real issue behind this error 500 logs?