Application Links are not working in Jira

[SSU]

Hi Team we have upgraded jira recently. Before upgradation the application links working fine the two way connection is showed as connected for the confluence in jira . But post upgradation it's giving "The server returned a bad response, you can refresh the page . If the error persists the application logs might provide an additional information" but nothing have been found so far. Can you please help to sort out the issue for Data centre 

[Kseniia Trushnikova]

Hi @SSU,

What version of Jira did you upgrade from and to?

I've found the open bug https://jira.atlassian.com/browse/JRASERVER-73775 that might affect you. Please check if you have the same error in the atlassian-jira.log file.