Hi @Kaniz Fatmaโ , thank you for the suggestion. After further discussions with my team, this seems to happen in many of the following cases:
Too many cells in a notebok
"Too many" display commands
The last cell in a notebook not being a python cell
The error that we receive is very general, and shown below. In this case, I was able to successfully push a notebook, then 5 minutes later I could not push the same exact notebook, so I definitely HAD push rights.