Hi,

The error is indicating that there is a problem with the file school_management/security/ir.model.access.csv. Specifically, it seems that there is a missing or incorrect reference to an external ID 'model_school_student' in the 'Model' field.Verify that the external ID 'model_school_student' exists in your system. External IDs are used to reference records across modules, and in this case, it seems that the specified external ID is not found.



Hope it helps

not resolve error after update show same error

Traceback (most recent call last):
  File "E:\LearnOdoo\server\odoo\http.py", line 1591, in _serve_db
    return service_model.retrying(self._serve_ir_http, self.env)
  File "E:\LearnOdoo\server\odoo\service\model.py", line 133, in retrying
    result = func()
  File "E:\LearnOdoo\server\odoo\http.py", line 1618, in _serve_ir_http
    response = self.dispatcher.dispatch(rule.endpoint, args)
  File "E:\LearnOdoo\server\odoo\http.py", line 1822, in dispatch
    result = self.request.registry['ir.http']._dispatch(endpoint)
  File "E:\LearnOdoo\server\odoo\addons\base\models\ir_http.py", line 154, in _dispatch
    result = endpoint(**request.params)
  File "E:\LearnOdoo\server\odoo\http.py", line 697, in route_wrapper
    result = endpoint(self, *args, **params_ok)
  File "E:\LearnOdoo\server\odoo\addons\web\controllers\dataset.py", line 46, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "E:\LearnOdoo\server\odoo\addons\web\controllers\dataset.py", line 33, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "E:\LearnOdoo\server\odoo\api.py", line 468, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "E:\LearnOdoo\server\odoo\api.py", line 453, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "", line 2, in button_immediate_install
  File "E:\LearnOdoo\server\odoo\addons\base\models\ir_module.py", line 74, in check_and_log
    return method(self, *args, **kwargs)
  File "E:\LearnOdoo\server\odoo\addons\base\models\ir_module.py", line 474, in button_immediate_install
    return self._button_immediate_function(self.env.registry[self._name].button_install)
  File "E:\LearnOdoo\server\odoo\addons\base\models\ir_module.py", line 598, in _button_immediate_function
    registry = modules.registry.Registry.new(self._cr.dbname, update_module=True)
  File "", line 2, in new
  File "E:\LearnOdoo\server\odoo\tools\func.py", line 87, in locked
    return func(inst, *args, **kwargs)
  File "E:\LearnOdoo\server\odoo\modules\registry.py", line 90, in new
    odoo.modules.load_modules(registry, force_demo, status, update_module)
  File "E:\LearnOdoo\server\odoo\modules\loading.py", line 488, in load_modules
    processed_modules += load_marked_modules(cr, graph,
  File "E:\LearnOdoo\server\odoo\modules\loading.py", line 372, in load_marked_modules
    loaded, processed = load_module_graph(
  File "E:\LearnOdoo\server\odoo\modules\loading.py", line 231, in load_module_graph
    load_data(cr, idref, mode, kind='data', package=package)
  File "E:\LearnOdoo\server\odoo\modules\loading.py", line 71, in load_data
    tools.convert_file(cr, package.name, filename, idref, mode, noupdate, kind)
  File "E:\LearnOdoo\server\odoo\tools\convert.py", line 759, in convert_file
    convert_csv_import(cr, module, pathname, fp.read(), idref, mode, noupdate)
  File "E:\LearnOdoo\server\odoo\tools\convert.py", line 805, in convert_csv_import
    raise Exception(_('Module loading %s failed: file %s could not be processed:\n %s') % (module, fname, warning_msg))
Exception: Module loading school_management failed: file E:\LearnOdoo\server\custom_addons\school_management\security\ir.model.access.csv could not be processed:
 No matching record found for external id 'school_student' in field 'Model'
Missing required value for the field 'Model' (model_id)

The above server error caused the following client error:
RPC_ERROR: Odoo Server Error
    at makeErrorFromResponse (http://localhost:8065/web/assets/debug/web.assets_backend.js:10427:19) (/web/static/src/core/network/rpc_service.js:34)
    at XMLHttpRequest. (http://localhost:8065/web/assets/debug/web.assets_backend.js:10480:27) (/web/static/src/core/network/rpc_service.js:87)