Github Code link
RPC_ERROR
Odoo Server Error
Traceback (most recent call last):
  File "E:\Geopack\server\odoo\http.py", line 1782, in _serve_db
    return service_model.retrying(self._serve_ir_http, self.env)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\service\model.py", line 133, in retrying
    result = func()
             ^^^^^^
  File "E:\Geopack\server\odoo\http.py", line 1809, in _serve_ir_http
    response = self.dispatcher.dispatch(rule.endpoint, args)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\http.py", line 2013, in dispatch
    result = self.request.registry['ir.http']._dispatch(endpoint)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\addons\base\models\ir_http.py", line 221, in _dispatch
    result = endpoint(**request.params)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\http.py", line 757, in route_wrapper
    result = endpoint(self, *args, **params_ok)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\addons\web\controllers\dataset.py", line 28, in call_button
    action = self._call_kw(model, method, args, kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\addons\web\controllers\dataset.py", line 20, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\api.py", line 468, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\api.py", line 453, in _call_kw_multi
    result = method(recs, *args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\python\Lib\site-packages\decorator.py", line 232, in fun
    return caller(func, *(extras + args), **kw)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\addons\base\models\ir_module.py", line 75, in check_and_log
    return method(self, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\addons\base\models\ir_module.py", line 469, in button_immediate_install
    return self._button_immediate_function(self.env.registry[self._name].button_install)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\addons\base\models\ir_module.py", line 593, in _button_immediate_function
    registry = modules.registry.Registry.new(self._cr.dbname, update_module=True)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\python\Lib\site-packages\decorator.py", line 232, in fun
    return caller(func, *(extras + args), **kw)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\tools\func.py", line 87, in locked
    return func(inst, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\modules\registry.py", line 114, in new
    odoo.modules.load_modules(registry, force_demo, status, update_module)
  File "E:\Geopack\server\odoo\modules\loading.py", line 480, in load_modules
    processed_modules += load_marked_modules(env, graph,
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\modules\loading.py", line 364, in load_marked_modules
    loaded, processed = load_module_graph(
                        ^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\modules\loading.py", line 205, in load_module_graph
    registry.init_models(env.cr, model_names, {'module': package.name}, new_install)
  File "E:\Geopack\server\odoo\modules\registry.py", line 573, in init_models
    model._auto_init()
  File "E:\Geopack\server\odoo\models.py", line 3156, in _auto_init
    new = field.update_db(self, columns)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\Geopack\server\odoo\fields.py", line 3031, in update_db
    raise ValueError('Many2one %s from Model to TransientModel is forbidden' % self)
ValueError: Many2one attendance.field.mapping.config_id from Model to TransientModel is forbidden

The above server error caused the following client error:
RPC_ERROR: Odoo Server Error
    RPC_ERROR
        at makeErrorFromResponse (http://localhost:8069/web/assets/c1ea830/web.assets_web.min.js:2896:163)
        at XMLHttpRequest.<anonymous> (http://localhost:8069/web/assets/c1ea830/web.assets_web.min.js:2900:13)