Unknown internal error doing a POST to /api/shares/share/acl

Brief description of the problem

Receive an error of Unknown internal error doing a POST to /api/shares/share/acl when editing any access control

Detailed step by step instructions to reproduce the problem

When editing any permissions under Access Control for a share

Web-UI screenshot

Error Traceback provided on the Web-UI

blank

@rockstoruser24 Thanks for the report but I can’t reproduce this on my Rockstor boxes here!!
Can anyone else confirm this behaviour, I’m afraid I haven’t spend much time trying though. The Rockstor version I tested was 3.8-14.14 ?