Mirrored repository is no longer updating

I have a repo that has been mirroring for months without an issue and earlier today (about 3 hours ago) it stopped. It’s now failing and when I look in the Mirroring Repo settings, the error in the tooltip is:

2:uninitialized constant Gitlab::Git::GitlabProjects::Tempfile

I’ve tried a number of times to “force” an update without any luck.

Does this seem like a GitLab error or something within my repo?

…I’ve also just found that this same error is on other repos as well (repos I haven’t touched within a few days).