我正在使用 laravel 6.6 我正在嘗試使用 fullcalander 創建事件日歷我收到以下錯誤：- don't install illuminate/support v5.0.22|don't install laravel/framework v6.6.0- don't install illuminate/support v5.0.25|don't install laravel/framework v6.6.0- don't install illuminate/support v5.0.26|don't install laravel/framework v6.6.0- don't install illuminate/support v5.0.28|don't install laravel/framework v6.6.0- don't install illuminate/support v5.0.33|don't install laravel/framework v6.6.0- don't install illuminate/support v5.0.4|don't install laravel/framework v6.6.0- Installation request for laravel/framework (locked at v6.6.0, required as ^6.2) -> satisfiable by laravel/framework[v6.6.0].- Installation request for maddhatter/laravel-fullcalendar 1.3 -> satisfiable by maddhatter/laravel-fullcalendar[v1.3.0].**在我嘗試此代碼后**"repositories": [    {    "type": "vcs",    "url": "https://github.com/rayblair06/laravel-fullcalendar.git"    }    ],在我使用此代碼包后成功安裝。Calander 類無法定義      `Call to undefined function MaddHatter\LaravelFullcalendar\str_random() (View: C:\Users\Chamod\Desktop\SIS poject new\SIS\resources\views\calender.blade.php)`