[Solved] Cannot close ticket after upgrade from v3 to v4

[sandagsuren]

Hi all,

I have a problem on OTRS that cannot close tickets in UI. There is an error in popup window when click "Close" link on the Ticket view window. This issue is happening since i upgraded to v4 (now 4.0.12) from v3.
I had cleared caches, rebuilded config, and LoaderCache deleted and generated. Also deleted custom dynamic fields that had been created.
any suggestion?

Error:

Core.Agent.TicketAction is undefined index.pl?Action=AgentTicketClose;

(?)()@https://192.168.0.51/otrs/index.pl?Acti ... 4540:549:5
TargetNS.Ready/<@https://192.168.0.51/otrs-web/js/js-cac ... s:1271:120
m.Callbacks/j@https://192.168.0.51/otrs-web/js/js-cac ... js:1:27239
m.Callbacks/k.fireWith@https://192.168.0.51/otrs-web/js/js-cac ... js:1:28057
.ready@https://192.168.0.51/otrs-web/js/js-cac ... js:1:29889
J@https://192.168.0.51/otrs-web/js/js-cac ... js:1:30255

[root]

Check the SysConfig for Frontend::Agent::ModuleRegistration and if there are any changes within Frontend::Module###AgentTicketClose around the Loader. If yes try to reset them.

[sandagsuren]

Yeah, Problem solved after resetting Loader at Frontend::Module###AgentTicketClose in Frontend::Agent::ModuleRegistration.

Big thanks, root.