Application Links page is Broken

Problem

This error is appearing when editing the application link configuration on JIRA's end

There has been a failure while loading the page.
None of the tabs will be loaded.

Steps to Reproduce

1. Create the application link between JIRA and Confluence
2. Everything works as expected and shows Connected on both ends
3. Click on the pencil icon on the right side panel of the application link config

Expected Behaviour

No error will be displayed

Actual behaviour

An error is thrown though everything is working as expected.

Other affected screens

• Application Navigator (administration screens)
• Whitelist (administration screens)
• Tests in Zephyr

Workaround:

1. Download plugin-jira-1.5.0.obr.
2. From the application's administration console, click the Manage add-ons link.
3. Click the Upload add-on link at the top right side of the page.
4. Upload the downloaded OBR from step 1.