Warning: require(/opt/laravel/public/../vendor/autoload.php): Failed to open stream: No such file or directory in /opt/laravel/public/index.php on line 13

Fatal error: Uncaught Error: Failed opening required '/opt/laravel/public/../vendor/autoload.php' (include_path='.:/usr/local/lib/php') in /opt/laravel/public/index.php:13 Stack trace: #0 {main} thrown in /opt/laravel/public/index.php on line 13