Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromiseInterface" not found in /home/rwebserver/public_html/airpropayments/vendor/guzzlehttp/promises/src/RejectedPromise.php:11
Stack trace:
#0 {main}
thrown in /home/rwebserver/public_html/airpropayments/vendor/guzzlehttp/promises/src/RejectedPromise.php on line 11