Warning: require_once(C:\xampp\htdocs\vendor/composer/autoload_real.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\vendor\autoload.php on line 23

Fatal error: Uncaught Error: Failed opening required 'C:\xampp\htdocs\vendor/composer/autoload_real.php' (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\vendor\autoload.php:23 Stack trace: #0 C:\xampp\htdocs\index.php(30): require() #1 {main} thrown in C:\xampp\htdocs\vendor\autoload.php on line 23