Warning: require(G:\xampp\htdocs\mysites\Restaurant\Moltran\public/../vendor/autoload.php): failed to open stream: No such file or directory in G:\xampp\htdocs\mysites\Restaurant\Moltran\public\index.php on line 24 code example

Example: PHP Warning: require(/Applications/Ampps/www/SalesSystem/vendor/composer/../symfony/polyfill-php80/bootstrap.php): failed to open stream: No such file or directory in /Applications/Ampps/www/SalesSystem/vendor/composer/autoload_real.php on line 66

$ composer dump-autoload
  
 #if php artisan not installed, execute following command
$ php artisan install