Unable to install any Atlassian Marketplace app in Jira Cloud
Platform Notice: Cloud - This article applies to Atlassian products on the cloud platform.
Summary
An administrator is unable to successfully install any Atlassian Marketplace apps to their new Jira site. The error displayed on the screen is:
We ran into a little trouble. It might be a hiccup. Try later.
Environment
Jira Cloud
Diagnosis
Ensure that the user attempting to add an app is in the site-admin group on the Jira site.
Cause
There is no default group set for Jira Software product access, or it is set to the site-admins group.
Solution
Ensure that an appropriate default group is set for Jira Software (not the site-admins group).
Additional information:
Update product access settings: https://support.atlassian.com/user-management/docs/update-product-access-settings/