Hi @rohit_w,
The Env: Ubuntu hosted ERPNext 10.0.19 accessed from Windows 7 client PC via wireless LAN setup
There’s an error showing up in the web.error.log file many times daily as detailed below:
Error handling request /api/method/frappe.async.can_subscribe_doc:sid=xxxxxxxx
TypeError: argument of type ‘NoneType’ is not iterable
doctype = Sales Invoice
document = New Sales Invoice 1
Some consequence seems to be that it forces worker to exit, shuts down master and starting gunicorn
BTW, am still trying to figure out why the POS Sales are at times submitted and printed in duplicate or triplicate with single click of the Submit+Print buttons
What could be causing this issue? Any help is as always highly appreciated.
Kind Regards,