Possible rails validation problem with updating groups
Some users are reporting issues with updating groups (see internal https://support.gitlab.com/hc/en-us/requests/138496 and https://gitlab.slack.com/archives/CDRLZUVHB/p1573606281194300).
This is likely caused from this recent change !18515 (comment 243737630)
There may be many other places in GitLab where group updates are failing if there are NPM packages.
The error users are seeing is:
Group URL cannot change when group contains projects with NPM packages
Edited by Dylan Griffith