Hello,

I just bought an Odoo 14 enterprise On-Premise license that I installed on a local Windows server. I put my personal modules in the Odoo 14 addons folder. I restarted the server and I updated the list of applications, my applications appeared in the list but, when I try to install one of my module, I get the following error:

Odoo Server Error

Traceback (most recent call last):
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\addons\base\models\ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\http.py", line 683, in dispatch
    result = self._call_function(**self.params)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\http.py", line 359, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\service\model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\http.py", line 347, in checked_call
    result = self.endpoint(*a, **kw)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\http.py", line 912, in __call__
    return self.method(*args, **kw)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\http.py", line 531, in response_wrap
    response = f(*args, **kw)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\addons\web\controllers\main.py", line 1393, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\addons\web\controllers\main.py", line 1381, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\api.py", line 396, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\api.py", line 383, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "", line 2, in button_immediate_install
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\addons\base\models\ir_module.py", line 73, in check_and_log
    return method(self, *args, **kwargs)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\addons\base\models\ir_module.py", line 474, in button_immediate_install
    return self._button_immediate_function(type(self).button_install)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\addons\base\models\ir_module.py", line 592, in _button_immediate_function
    modules.registry.Registry.new(self._cr.dbname, update_module=True)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\modules\registry.py", line 89, in new
    odoo.modules.load_modules(registry._db, force_demo, status, update_module)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\modules\loading.py", line 455, in load_modules
    loaded_modules, update_module, models_to_check)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\modules\loading.py", line 348, in load_marked_modules
    perform_checks=perform_checks, models_to_check=models_to_check
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\modules\loading.py", line 178, in load_module_graph
    load_openerp_module(package.name)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\modules\module.py", line 358, in load_openerp_module
    __import__('odoo.addons.' + module_name)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\addons\hospital_management_patient\__init__.py", line 3, in 
    from . import models
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\addons\hospital_management_patient\models\__init__.py", line 3, in 
    from . import hms_patient_waiting
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\addons\hospital_management_patient\models\hms_patient_waiting.py", line 6, in 
    import matplotlib.pyplot as plt
Exception

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

Traceback (most recent call last):
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\http.py", line 639, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "C:\Program Files\Odoo 14.0e.20210518\server\odoo\http.py", line 315, in _handle_exception
    raise exception.with_traceback(None) from new_cause
ModuleNotFoundError: No module named 'matplotlib'

I installed python and matplotlib from the command line. so far it is the same error.

Thanks for your help