I’ve encountered a similar problem and the fix at the end of this thread seems to be working for me. Keep in mind that this is specific to certain types of installation (Docker in my case) and may not apply to your situation. Also, it involves modifying one of the core Frappe app files, so be sure to back it up first… Oddly, the advice in that thread was to modify a code block in the apps.py file, but I found and modified that block in the app.py file (no “s”).