I have 2 issues after the upgrade from v1.41.1 to v1.15.4 also had done a PHP version upgrade from 7.2 to 7.4
Consol shows:
Uncaught ReferenceError: jQuery is not defined
Uncaught ReferenceError: getConfig is not defined
/tickets.php?id=11470#reply
Issue 1: when end-user reply via the portal
the message is typed, when hitting Post Reply message shows "Correct any errors below and try again"
it seems like whatever typed is not registering
Issue #2:on End-user portal
Clicked on Ticket number opens the ticket, but not when clicking on Subject
system info: