Hello, im not familiar with the structure of odoo framework and i cant wrap my head around the problem where i got this error message when im trying to send an email to the customer using the 'send by email' button from the Sales app and the Purchase app. below are the error message that was given:-

RPC_ERROR

Odoo Server Error

Traceback (most recent call last):

File "/home/odoo/src/odoo/odoo/addons/base/models/ir_http.py", line 237, in _dispatch

result = request.dispatch()

File "/home/odoo/src/odoo/odoo/http.py", line 687, in dispatch

result = self._call_function(**self.params)

File "/home/odoo/src/odoo/odoo/http.py", line 359, in _call_function

return checked_call(self.db, *args, **kwargs)

File "/home/odoo/src/odoo/odoo/service/model.py", line 94, in wrapper

return f(dbname, *args, **kwargs)

File "/home/odoo/src/odoo/odoo/http.py", line 348, in checked_call

result = self.endpoint(*a, **kw)

File "/home/odoo/src/odoo/odoo/http.py", line 916, in __call__

return self.method(*args, **kw)

File "/home/odoo/src/odoo/odoo/http.py", line 535, in response_wrap

response = f(*args, **kw)

File "/home/odoo/src/odoo/addons/web/controllers/main.py", line 1335, in call_kw

return self._call_kw(model, method, args, kwargs)

File "/home/odoo/src/odoo/addons/web/controllers/main.py", line 1327, in _call_kw

return call_kw(request.env[model], method, args, kwargs)

File "/home/odoo/src/odoo/odoo/api.py", line 464, in call_kw

result = _call_kw_multi(method, model, args, kwargs)

File "/home/odoo/src/odoo/odoo/api.py", line 451, in _call_kw_multi

result = method(recs, *args, **kwargs)

File "/home/odoo/src/odoo/odoo/models.py", line 6453, in onchange

record._onchange_eval(name, field_onchange[name], result)

File "/home/odoo/src/odoo/odoo/models.py", line 6186, in _onchange_eval

method_res = method(self)

File "/home/odoo/src/odoo/addons/mail/wizard/mail_compose_message.py", line 170, in _onchange_template_id_wrapper

values = self._onchange_template_id(self.template_id.id, self.composition_mode, self.model, self.res_id)['value']

File "/home/odoo/src/odoo/addons/mail/wizard/mail_compose_message.py", line 538, in _onchange_template_id

values = self.generate_email_for_composer(

File "/home/odoo/src/odoo/addons/mail/wizard/mail_compose_message.py", line 648, in generate_email_for_composer

template_values = self.env['mail.template'].with_context(tpl_partners_only=True).browse(template_id).generate_email(res_ids, fields)

File "/home/odoo/src/odoo/addons/account_edi/models/mail_template.py", line 10, in generate_email

res = super().generate_email(res_ids, fields)

File "/home/odoo/src/odoo/addons/mail/models/mail_template.py", line 187, in generate_email

results = template.generate_recipients(results, template_res_ids)

File "/home/odoo/src/odoo/addons/mail/models/mail_template.py", line 154, in generate_recipients

tpl_partner_ids = [int(pid) for pid in partner_to.split(',') if pid]

File "/home/odoo/src/odoo/addons/mail/models/mail_template.py", line 154, in

tpl_partner_ids = [int(pid) for pid in partner_to.split(',') if pid]

Exception



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



Traceback (most recent call last):

File "/home/odoo/src/odoo/odoo/http.py", line 643, in _handle_exception

return super(JsonRequest, self)._handle_exception(exception)

File "/home/odoo/src/odoo/odoo/http.py", line 301, in _handle_exception

raise exception.with_traceback(None) from new_cause

ValueError: invalid literal for int() with base 10: '${object.partner_id.id}'

note that the email on that customer is assigned.