Why “no such file or directory … autoload.php” when accessing Laravel app?

Question

I am a newbie to Laravel, have been trying to install Laravel, wasted three hours unfortunately didn\'t work. When I access through public directory, I get these errors:

Answer 1

This error indicates it can not find "autoload.php" under the vendor folder.

Make sure the vendor folder is generated by running the "composer install" command and the autoload.php file also created.