Sorry to come back with another issue from my (3.3.7 to 4.0.2) upgrade. I can login normally to the customer portal and even create a ticket however when i try to open a ticket I receive an Internal Server Error.
0. I performed the upgrade using RMP.Can't locate object method "CheckCharset" via package "Kernel::Output::HTML::
Layout" at /opt/otrs//Kernel/Modules/CustomerTicketZoom.pm line 1352. \n
1. I re-run the SQL and Perl script and they completed successfully.
2. I ran RebuildConfig and DeleteCache as otrs user.
3. I ran SetPermissions.
4. I restarted all services.
Really don't know what else to check and I will appreciate your assistance whenever you have time to replay.
Ruben.