error installing MRO v10.0

e.py

Traceback (most recent call last):
  File "/home/ovnicraft/development/odoo10/odoo/http.py", line 638, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/ovnicraft/development/odoo10/odoo/http.py", line 675, in dispatch
    result = self._call_function(**self.params)
  File "/home/ovnicraft/development/odoo10/odoo/http.py", line 331, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/ovnicraft/development/odoo10/odoo/service/model.py", line 119, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/ovnicraft/development/odoo10/odoo/http.py", line 324, in checked_call
    result = self.endpoint(*a, **kw)
  File "/home/ovnicraft/development/odoo10/odoo/http.py", line 933, in __call__
    return self.method(*args, **kw)
  File "/home/ovnicraft/development/odoo10/odoo/http.py", line 504, in response_wrap
    response = f(*args, **kw)
  File "/home/ovnicraft/development/odoo10/addons/web/controllers/main.py", line 866, in call_button
    action = self._call_kw(model, method, args, {})
  File "/home/ovnicraft/development/odoo10/addons/web/controllers/main.py", line 854, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/home/ovnicraft/development/odoo10/odoo/api.py", line 681, in call_kw
    return call_kw_multi(method, model, args, kwargs)
  File "/home/ovnicraft/development/odoo10/odoo/api.py", line 672, in call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/home/ovnicraft/development/odoo10/odoo/addons/base/module/module.py", line 410, in button_immediate_install
    return self._button_immediate_function(type(self).button_install)
  File "/home/ovnicraft/development/odoo10/odoo/addons/base/module/module.py", line 484, in _button_immediate_function
    modules.registry.Registry.new(self._cr.dbname, update_module=True)
  File "/home/ovnicraft/development/odoo10/odoo/modules/registry.py", line 78, in new
    odoo.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/home/ovnicraft/development/odoo10/odoo/modules/loading.py", line 339, in load_modules
    loaded_modules, update_module)
  File "/home/ovnicraft/development/odoo10/odoo/modules/loading.py", line 237, in load_marked_modules
    loaded, processed = load_module_graph(cr, graph, progressdict, report=report, skip_modules=loaded_modules, perform_checks=perform_checks)
  File "/home/ovnicraft/development/odoo10/odoo/modules/loading.py", line 136, in load_module_graph
    registry.init_models(cr, model_names, {'module': package.name})
  File "/home/ovnicraft/development/odoo10/odoo/modules/registry.py", line 327, in init_models
    models[0].recompute()
  File "/home/ovnicraft/development/odoo10/odoo/models.py", line 5286, in recompute
    vals = rec._convert_to_write({n: rec[n] for n in ns})
  File "/home/ovnicraft/development/odoo10/odoo/models.py", line 5286, in <dictcomp>
    vals = rec._convert_to_write({n: rec[n] for n in ns})
  File "/home/ovnicraft/development/odoo10/odoo/models.py", line 5185, in __getitem__
    return self._fields[key].__get__(self, type(self))
  File "/home/ovnicraft/development/odoo10/odoo/fields.py", line 869, in __get__
    self.determine_value(record)
  File "/home/ovnicraft/development/odoo10/odoo/fields.py", line 955, in determine_value
    self.compute_value(recs)
  File "/home/ovnicraft/development/odoo10/odoo/fields.py", line 935, in compute_value
    self._compute_value(records)
  File "/home/ovnicraft/development/odoo10/odoo/fields.py", line 926, in _compute_value
    getattr(records, self.compute)()
  File "/home/ovnicraft/development/projects/oca/odoo-eam/mro/product_template.py", line 19, in _check_category
    product.isParts = product.categ_id.id == parts_category.id
AttributeError: 'NoneType' object has no attribute 'id'