Fatal error: Uncaught Error: Class 'GuzzleHttp\Promise\RejectionException' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\vendor\guzzlehttp\promises\src\AggregateException.php:7
Stack trace:
#0 {main}
  thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables2\libreria\vendor\guzzlehttp\promises\src\AggregateException.php on line 7