[15.0] mail_drop_target - RPC_ERROR Odoo Server Error - (bug)

[khaemm]

module: mail_drop_target
version: 15.0

Steps to reproduce
I am on Windows 10.
I have Thunderbird opened, with a list of mail on it.
I have Odoo opened on CRM with Firefox.
I made a "Click and move" on the CRM note part.

Current behavior
After a moment, I had an error message :
Traceback (most recent call last):
File "/odoo/odoo-server/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
result = request.dispatch()
File "/odoo/odoo-server/odoo/http.py", line 687, in dispatch
result = self._call_function(**self.params)
File "/odoo/odoo-server/odoo/http.py", line 359, in _call_function
return checked_call(self.db, *args, **kwargs)
File "/odoo/odoo-server/odoo/service/model.py", line 94, in wrapper
return f(dbname, *args, **kwargs)
File "/odoo/odoo-server/odoo/http.py", line 348, in checked_call
result = self.endpoint(*a, **kw)
File "/odoo/odoo-server/odoo/http.py", line 916, in call
return self.method(*args, **kw)
File "/odoo/odoo-server/odoo/http.py", line 535, in response_wrap
response = f(*args, **kw)
File "/odoo/odoo-server/addons/web/controllers/main.py", line 1343, in call_kw
return self._call_kw(model, method, args, kwargs)
File "/odoo/odoo-server/addons/web/controllers/main.py", line 1335, in _call_kw
return call_kw(request.env[model], method, args, kwargs)
File "/odoo/odoo-server/odoo/api.py", line 460, in call_kw
result = _call_kw_model(method, model, args, kwargs)
File "/odoo/odoo-server/odoo/api.py", line 433, in _call_kw_model
result = method(recs, *args, **kwargs)
File "/odoo/custom/addons/mail_drop_target/models/mail_thread.py", line 39, in message_drop
result = self_message_process.message_process(
File "/odoo/odoo-server/addons/mail/models/mail_thread.py", line 1123, in message_process
routes = self.message_route(message, msg_dict, model, thread_id, custom_values)
File "/odoo/odoo-server/addons/mail/models/mail_thread.py", line 980, in message_route
route = self._routing_check_route(message, message_dict, route, raise_exception=True)
File "/odoo/odoo-server/addons/mail/models/mail_thread.py", line 786, in _routing_check_route
self.routing_warn(('model %s does not accept document creation', model), message_id, route, raise_exception)
File "/odoo/odoo-server/addons/mail/models/mail_thread.py", line 652, in _routing_warn
raise ValueError(short_message)
Exception

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/odoo/odoo-server/odoo/http.py", line 643, in _handle_exception
return super(JsonRequest, self)._handle_exception(exception)
File "/odoo/odoo-server/odoo/http.py", line 301, in _handle_exception
raise exception.with_traceback(None) from new_cause
ValueError: Boîte de réception non disponible – Le modèle res.users n'accepte pas la création de documents

Expected behavior
Normaly, the mail will have to go in the notes of opportunity.

I can give you more details if necessary.

Can someone help me please ?

Thanks,
Best regards,
Emmanuel