The issue of CAs landing page after long stay in the log back to the landing page

CAS stay on the landing page repeat time too long, resulting in repeated landing situation:

After debugging the source code, the following problems are found:

Flowhnadleradapter the 183th line error led to spring Direct 302 jump. The error message is as follows:

Org.springframework.webflow.execution.repository.NoSuchFlowExecutionException:No flow execution could is found with Key ' E1S1 '-- Perhaps this executing flow have ended or expired? This could happen if your users is relying on browser history (typically via the back button) that references ended flows .

After careful examination, it was found that the session in Web. XML was configured for 5 minutes, and the value was adjusted to the appropriate values without the phenomenon.

The issue of CAs landing page after long stay in the log back to the landing page