Fatal error: Uncaught Error: Interface 'GuzzleHttp\BodySummarizerInterface' not found in D:\xampp\htdocs\psp\backend\vendor\guzzlehttp\guzzle\src\BodySummarizer.php:7 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\guzzlehttp\guzzle\src\BodySummarizer.php on line 7