500 error when fetching large job


i am currently using gitlab.com and running a balena build pipeline in the GitLab CI.
It has been running fine for a couple of month, but since a few weeks i am not able to fetch any of the jobs in my staging branch. Fetching every other branch works fine.

GUI error:

Chrome, Firefox and Safari debug error:

Email notification on failed builds works, but only sends me the last couple of lines of the the log:

Do you have any clue what i could do in order to resolve it. Specially since it is our staging branch, this is a huge challenge for us, since the staging builds will sometimes fail, but but with no access to the logs, this is quiet difficult to debug :confused: