Question2Replies1349Views SivaKumarS2856 Member since 2015 5 posts United Health group Posted: 1 year agoLast activity: 1 year 8 months ago Closed Unable to open cases - Component stack mismatch After upgrade from 7.1.9 to 7.4Hi ,After upgrading form 7.1.9 to 7.4 we are unable to open any case- we receive error asSection 'Review' execution error on page 'pyWorkPage' of class ' '. java.lang.RuntimeException: Component stack mismatch Low-Code App Development Upgrades ×Close popoverFacebookTwitterLinkedinEmail Copy Link Copied! Moderation Team has archived post This thread is closed to future replies. Content and links will no longer be updated. If you have the same/similar Question, please write a new Question. Posted: 1 year agoMarcLasserre_GCS PEGA replied to SivaKumarS2856Hello, Looks like the class is blank. Can you trace it and share the tracer ouput? Regards Posted: 1 year agoPatrickC8660 TD Bank Group replied to SivaKumarS2856I am facing the same issue, but only for a specific section and we updated from 7.2.2. Any luck fixing it? *** EDIT *** For me it started working eventually without doing anything. Other developers did not see the issue.