( ! ) Fatal error: Interface 'GuzzleHttp\Promise\PromiseInterface' not found in C:\wamp64\www\BOI\wp-content\plugins\elementskit\libs\composer\vendor\guzzlehttp\promises\src\FulfilledPromise.php on line 11
Call Stack
#	Time	Memory	Function	Location
1	0.0013	424952	{main}( )	...\FulfilledPromise.php:0