Issue

We are using ‘Email Extension Plugin’ for email notifications. As you can see from the attached screenshot, Jenkins throws an exception when we click on ‘Email Template Testing’ and ‘Log in’ link appears on right upper screen even though we are still logged in.

Environment

• Jenkins: 1.602
• Email Extension Plugin: 2.39

Resolution

In this case, the installation was corrupt. Uninstalling and reinstalling the plugin resolved the issue.