Fatal error: Uncaught Error: Class 'shelfy\util\RuntimeException' not found in /var/www/html/classes/shelfy/util/Image.php:34 Stack trace: #0 /var/www/html/classes/shelfy/image/App.php(324): shelfy\util\Image->resize('/var/www/html/c...', 128, 128, '/var/www/html/c...') #1 /var/www/html/classes/shelfy/image/App.php(67): shelfy\image\App->optimizeFile(Array) #2 /var/www/html/public/index.php(35): shelfy\image\App->run(Array) #3 {main} thrown in /var/www/html/classes/shelfy/util/Image.php on line 34