Fatal error: Uncaught Error: Interface 'GuzzleHttp\Promise\PromisorInterface' not found in /data/htmlwww/workspace/web-tubanzhang/vendor/guzzlehttp/guzzle/src/Pool.php:19
Stack trace:
#0 {main}
thrown in /data/htmlwww/workspace/web-tubanzhang/vendor/guzzlehttp/guzzle/src/Pool.php on line 19