Gitlab and JIRA Integration does not work!

Folks,

We have followed all the steps of Integration between Gitlab v14.0.11 and JIRA v 8.3.4, both self hosted and can successfully test the connection too.

But, when we create a story and with the same Story ID, a branch gets created - integration doesnt work or we don’t see Issue links getting updated with Gitlab related commits or merge.

Looking into exceptions_json.log for JIRA::HTTPError or any JIRA error gave no results.

Can someone please shed light on this issue ? and resolution, if any ?

You support will be greatly appreciated !!