Jira Server integration was working but now returning error

Jira server is active in the project and was previously working.
I tried to add an existing issue

It then popped up the below and returned an error.

I am using the desktop app version of Asana.

Hi @Tony_Kenny, welcome to the Asana Community Forum :wave:

Thanks for flagging this. I’d suggest reaching out to our Support team with this so they can take a closer look for you.

You can reach them by following these steps:

I hope this helps!