Error:
Odoo Server Error

Traceback (most recent call last):
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\http.py", line 653, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\http.py", line 312, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\tools\pycompat.py", line 87, in reraise
    raise value
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\http.py", line 695, in dispatch
    result = self._call_function(**self.params)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\http.py", line 344, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\service\model.py", line 97, in wrapper
    return f(dbname, *args, **kwargs)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\http.py", line 337, in checked_call
    result = self.endpoint(*a, **kw)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\http.py", line 939, in __call__
    return self.method(*args, **kw)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\http.py", line 517, in response_wrap
    response = f(*args, **kw)
  File "c:\program files (x86)\odoo 11.0\server\odoo\addons\web\controllers\main.py", line 938, in call_button
    action = self._call_kw(model, method, args, {})
  File "c:\program files (x86)\odoo 11.0\server\odoo\addons\web\controllers\main.py", line 926, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\api.py", line 699, in call_kw
    return call_kw_multi(method, model, args, kwargs)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\api.py", line 690, in call_kw_multi
    result = method(recs, *args, **kwargs)
  File "<decorator-gen-57>", line 2, in button_immediate_install
  File "c:\program files (x86)\odoo 11.0\server\odoo\addons\base\module\module.py", line 72, in check_and_log
    return method(self, *args, **kwargs)
  File "c:\program files (x86)\odoo 11.0\server\odoo\addons\base\module\module.py", line 450, in button_immediate_install
    return self._button_immediate_function(type(self).button_install)
  File "c:\program files (x86)\odoo 11.0\server\odoo\addons\base\module\module.py", line 552, in _button_immediate_function
    modules.registry.Registry.new(self._cr.dbname, update_module=True)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\modules\registry.py", line 85, in new
    odoo.modules.load_modules(registry._db, force_demo, status, update_module)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\modules\loading.py", line 380, in load_modules
    loaded_modules, update_module, models_to_check)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\modules\loading.py", line 274, in load_marked_modules
    perform_checks=perform_checks, models_to_check=models_to_check
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\modules\loading.py", line 137, in load_module_graph
    load_openerp_module(package.name)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\modules\module.py", line 368, in load_openerp_module
    __import__('odoo.addons.' + module_name)
  File "C:\Program Files (x86)\Odoo 11.0\server\odoo\modules\module.py", line 61, in load_module
    f, path, (_suffix, _mode, type_) = imp.find_module(addon_name, ad_paths)
  File "C:\Program Files (x86)\Odoo 11.0\python\lib\imp.py", line 296, in find_module
    raise ImportError(_ERR_MSG.format(name), name=name)
ImportError: No module named 'test'