Fatal error: Uncaught Error: Interface "Smush_Vendor\GuzzleHttp\Promise\PromiseInterface" not found in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/wp-smushit/vendor_prefixed/guzzlehttp/promises/src/Promise.php:13 Stack trace: #0 {main} thrown in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/wp-smushit/vendor_prefixed/guzzlehttp/promises/src/Promise.php on line 13