Although the link
https://git.wikimedia.org/blob/operations%2Fpuppet.git/ef59b32b7e8d7ecd5a47afcdfa9062cc926ae0f7/manifests%2Fadmins.pp#L48
works fine, if I replace the hash by "head" I get one which doesn't work:
https://git.wikimedia.org/blob/operations%2Fpuppet.git/head/manifests%2Fadmins.pp#L48
It shows the following:
Internal error
Return to home page
This link probably worked at some point, because it is linked from
https://meta.wikimedia.org/wiki/System_administrators?oldid=5684239
Version: wmf-deployment
Severity: normal