Warning: require_once(../vendor/autoload.php): Failed to open stream: No such file or directory in C:\Apache24\htdocs\cms_upgrade\vendor\chillerlan\php-qrcode\public\qrcode.php on line 15

Fatal error: Uncaught Error: Failed opening required '../vendor/autoload.php' (include_path='.;C:\php\pear') in C:\Apache24\htdocs\cms_upgrade\vendor\chillerlan\php-qrcode\public\qrcode.php:15 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\chillerlan\php-qrcode\public\qrcode.php on line 15