试图使用laravel获取非对象的属性'id'

我是laravel的初学者，我正在尝试更新数据，但不幸的是我面临错误如何解决？有谁有主意请帮我谢谢。请查看此错误https://flareapp.io/share/Lm839R5v

控制者

  public function update(Request $request, $cms)
  {
       $cms = CMS::findOrFail($cms);
       $request->validate([
      'text'      => 'required',
       ]);

       $cms->text      = $request->text;
       $cms->type      = 16;
       $cms->save();
       return response()->json('Updated successfully', 200);
   }

路线

 Route::get('/pages/election','ElectionController@index')->name('about.elections');
 Route::put('/pages/election/{cms}/update', "ElectionController@update")- 
 >name('about.elctions.update');