I’m not entirely sure this belongs as an answer here, but I did encounter the same “PermissionError” before I found the following workaround.

While submitting jobs from an HPC login node at my institution, I discovered the PermissionError came from a parent directory many levels higher than my working directory — one whose permissions I couldn’t modify. My workaround was to switch to a different login node and submit the exact same job.

This problem of the original login node throwing up PermissionError seems temporary and should be fixed once the HPC finds out about it.