Fatal error: Uncaught Error: Interface 'WPMailSMTP\Vendor\Psr\Http\Message\StreamInterface' not found in E:\www\web\wp-content\plugins\wp-mail-smtp\vendor_prefixed\guzzlehttp\psr7\src\BufferStream.php:16 Stack trace: #0 {main} thrown in E:\www\web\wp-content\plugins\wp-mail-smtp\vendor_prefixed\guzzlehttp\psr7\src\BufferStream.php on line 16