Warning: require(vendor/autoload.php): Failed to open stream: No such file or directory in D:\xampp\htdocs\SSWPOS\bkfile\payment_success.php on line 2

Fatal error: Uncaught Error: Failed opening required 'vendor/autoload.php' (include_path='D:\xampp\php\PEAR') in D:\xampp\htdocs\SSWPOS\bkfile\payment_success.php:2 Stack trace: #0 {main} thrown in D:\xampp\htdocs\SSWPOS\bkfile\payment_success.php on line 2