Jira integration configuration

I configured Jira QA server(http://cjicsqa.xx.net/jira) and test is OK. However test is not OK when I configured Jira real server(http://cjics.xx.net/jira). Error message is "Something went wrong on our end). I don’t know what problem is. Two Jira servers’ environment is same (I migrated from real server to QA server 2 months ago)

Can you advice?

ps. I configured GIT INTEGRATION FOR JIRA from Jira and git repository connection is tested.

If this is self-managed instance look in Gitlab logs whats the error.