Jira Links on confluence page are displaying an error message for the issue Summary

[Arlyn Hoeppner]

When inserting a link to a Jira issue on a confluence page. it shows the Jira ID and summary. Bu when I publish the page I get the issue link and for the title it says "Jira returned an error: Gone". 

I get the same think when I use Ctrl + K and search for a Jira Issue. 

[Rajat Pratap Singh]

Hi @Arlyn Hoeppner 

Looks like the application links between Confluence and Jira are not configured correctly.

Have you recently migrated Jira from Data Center/Server to Cloud?
If so, please check the application link settings in Confluence:

Go to Confluence Settings → Data Management → Application Links.

Locate the Jira application link and click Edit / Go to Remote.

Verify that it is pointing to the correct Jira base URL.

If not, remove the existing link and create a new one with the correct Jira base URL.

Re-authenticate using OAuth.

Hope this helps!

Regards
Rajat