Hi, thanks for your answer!

That's a really good point. I didn't think about that!
I tried to uninstall the enterprise modules by going to the module > uninstall but got errors as well. There are 3 enterprise modules I think I need to remove: Barcode, Studio and Accounting.

For example, If I try to remove the "Studio" module I get this error:

RPC_ERROR
Odoo Server Error

Traceback (most recent call last):
File "C:\Program Files\Odoo15\server\odoo\addons\base\models\ir_http.py", line 237, in _dispatch
result = request.dispatch()
File "C:\Program Files\Odoo15\server\odoo\http.py", line 698, in dispatch
result = self._call_function(**self.params)
File "C:\Program Files\Odoo15\server\odoo\http.py", line 368, in _call_function
return checked_call(self.db, *args, **kwargs)
File "C:\Program Files\Odoo15\server\odoo\service\model.py", line 94, in wrapper
return f(dbname, *args, **kwargs)
File "C:\Program Files\Odoo15\server\odoo\http.py", line 357, in checked_call
result = self.endpoint(*a, **kw)
File "C:\Program Files\Odoo15\server\odoo\http.py", line 921, in __call__
return self.method(*args, **kw)
File "C:\Program Files\Odoo15\server\odoo\http.py", line 546, in response_wrap
response = f(*args, **kw)
File "C:\Program Files\Odoo15\server\odoo\addons\web\controllers\main.py", line 1324, in call_kw
return self._call_kw(model, method, args, kwargs)
File "C:\Program Files\Odoo15\server\odoo\addons\web\controllers\main.py", line 1316, in _call_kw
return call_kw(request.env[model], method, args, kwargs)
File "C:\Program Files\Odoo15\server\odoo\api.py", line 462, in call_kw
result = _call_kw_model_create(method, model, args, kwargs)
File "C:\Program Files\Odoo15\server\odoo\api.py", line 442, in _call_kw_model_create
result = method(recs, *args, **kwargs)
File "<decorator-gen-67>", line 2, in create
File "C:\Program Files\Odoo15\server\odoo\api.py", line 412, in _model_create_multi
return create(self, [arg])
File "C:\Program Files\Odoo15\server\odoo\addons\base\models\ir_fields.py", line 613, in create
recs = super().create(vals_list)
File "<decorator-gen-13>", line 2, in create
File "C:\Program Files\Odoo15\server\odoo\api.py", line 413, in _model_create_multi
return create(self, arg)
File "C:\Program Files\Odoo15\server\odoo\models.py", line 4041, in create
raise ValueError("Invalid field %r on model %r" % (key, self._name))
Exception

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

Traceback (most recent call last):
File "C:\Program Files\Odoo15\server\odoo\http.py", line 654, in _handle_exception
return super(JsonRequest, self)._handle_exception(exception)
File "C:\Program Files\Odoo15\server\odoo\http.py", line 301, in _handle_exception
raise exception.with_traceback(None) from new_cause
ValueError: Invalid field 'is_studio' on model 'base.module.uninstall'

Is there any other way that I could remove them?