(User Error) Could not find the file /app/controllers/index_controller.php for the controller IndexController

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(User Error) Controller IndexController does not exist

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Fatal error: Uncaught Error: Class 'IndexController' not found in /var/www/html/akelos/lib/AkRequest.php:830 Stack trace: #0 /var/www/html/akelos/lib/AkDispatcher.php(45): AkRequest->recognize() #1 /var/www/html/spa_paw/public/index.php(51): AkDispatcher->dispatch() #2 {main} thrown in /var/www/html/akelos/lib/AkRequest.php on line 830