Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromiseInterface" not found in /home/theinsightpartne/public_html/blog/wp-content/plugins/fast-indexing-api/vendor/guzzlehttp/promises/src/RejectedPromise.php:11 Stack trace: #0 {main} thrown in /home/theinsightpartne/public_html/blog/wp-content/plugins/fast-indexing-api/vendor/guzzlehttp/promises/src/RejectedPromise.php on line 11