Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Logging\Log" not found in C:\mywamp\sites\allsite\calcomposer\vendor\laravel\framework\src\Illuminate\Log\Writer.php:21 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\laravel\framework\src\Illuminate\Log\Writer.php on line 21