I have already set up login successfully to github and I even see the changes identified by the PULL, but when I click on the button to bring the changes down, I'm still getting this error. Already made sure that the GAS API is properly enabled. I removed and added the extension twice already, so I'm sure I'm using the latest version (5.0.0.2).

Already tried installing and uninstalling many times and also generated a new key on github; I'm able to see the repositories and the code changes, though, but the error happens whenever the pull is done.