Fatal error: Uncaught Error: Class 'GuzzleHttp\Promise\RejectionException' not found in C:\xampp\htdocs\admin\vendor\guzzlehttp\promises\src\CancellationException.php:8
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\admin\vendor\guzzlehttp\promises\src\CancellationException.php on line 8