Hello,
I want to know if its possible, delete an invoice when I excecute the action_cancel() method in "act_cancel" workflow.activity, I tried to do that but I got this error:
File "/home/zabyca/workspace/eclipse/odoo9/openerp/workflow/instance.py", line 75, in _update_end wkf_id = cr.fetchone()[0]TypeError: 'NoneType' object has no attribute '__getitem__'
Greetings