Crash when clearing the report extensions
When I create a report, I set them a name and I clear it's extension i get the following error:
Traceback (most recent call last):
File "/trytond/wsgi.py", line 104, in dispatch_request
return endpoint(request, **request.view_args)
File "/trytond/protocols/dispatcher.py", line 48, in rpc
request, database_name, *request.rpc_params)
File "/trytond/wsgi.py", line 72, in auth_required
return wrapped(*args, **kwargs)
File "/trytond/protocols/wrappers.py", line 131, in wrapper
return func(request, pool, *args, **kwargs)
File "/trytond/protocols/dispatcher.py", line 191, in _dispatch
result = rpc.result(meth(inst, *c_args, **c_kwargs))
File "/trytond/model/fields/field.py", line 117, in wrapper
return func(self, *args, **kwargs)
File "/trytond/ir/action.py", line 647, in on_change_with_report_content_name
return ''.join([self.name, os.extsep, self.template_extension])
TypeError: sequence item 2: expected str instance, NoneType found
Fault: sequence item 2: expected str instance, NoneType found