Warning: require(/back/public/../vendor/autoload.php): Failed to open stream: Permission denied in /back/public/index.php on line 34

Fatal error: Uncaught Error: Failed opening required '/back/public/../vendor/autoload.php' (include_path='.:/usr/local/lib/php') in /back/public/index.php:34 Stack trace: #0 {main} thrown in /back/public/index.php on line 34