ContributionsMost RecentMost LikesSolutionsRe: Zephyr plugin is not working for Jira server The issue was related to file attachment permissions. I have resolved that following this Configure file attachment guide Configuring file attachments | Administering Jira applications Data Center and Server 8.18 | Atlassian Documentation Zephyr plugin is not working for Jira server I have installed the Jira server locally and I was trying to install the Zephyr plugin in order to test automation integration. I have configured all the steps following the guide that is generated when I get the trial license: When I click on Enable button from the Manage apps options I face an error: Attached is the traceback taken from the Jira log file.