Laravel Artisan all commands return Not Found?

Question

Laravel

Any artisan commands return not found
composer update returns
Script php artisan optimize handling the post-install-cmd event returned with error code 1

Answer 1

The problem was due to using resolve() inside routes\web.php and config\app.php

Answer 2

Are you sure you're in the project folder?

Answer 3

composer dump-autoload
composer update
Try this?