( ! ) Fatal error: Interface 'GuzzleHttp\Promise\PromisorInterface' not found in C:\wamp64\www\ws\vendor\aws\aws-sdk-php\src\S3\ObjectCopier.php on line 17
Call Stack
#	Time	Memory	Function	Location
1	0.0501	404520	{main}( )	...\ObjectCopier.php:0