Internal Server Error on Upgrade page

[david (David Taylor)]

I’ve posted this topic describing the error, and how to recover:

Visiting /admin/upgrade may lead to a server error

If you’re currently running a standard installation of Discourse earlier than v3.1.0.beta7 (or stable earlier than v3.0.6), there is a chance you will be met with this error when attempting to upgrade via the admin UI: Server Error while trying to load /admin/docker/repos Error code: 500 error [admin upgrade error message screenshot] To resolve the issue, you will need to run a command-line rebuild: cd /var/discourse ./launcher rebuild app Once you’ve run a CLI upgrade, future upgrades…