Warning: require_once(vendor/autoload.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\Login_with_Google\config.php on line 5

Fatal error: Uncaught Error: Failed opening required 'vendor/autoload.php' (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\Login_with_Google\config.php:5 Stack trace: #0 C:\xampp\htdocs\Login_with_Google\index.php(3): require_once() #1 {main} thrown in C:\xampp\htdocs\Login_with_Google\config.php on line 5