Fatal error: Uncaught Error: Interface "PostFinanceCheckout\Sdk\Http\IHttpClient" not found in /home/lcanetwork/public_html/qr/vendor/postfinancecheckout/sdk/lib/Http/SocketHttpClient.php:34 Stack trace: #0 {main} thrown in /home/lcanetwork/public_html/qr/vendor/postfinancecheckout/sdk/lib/Http/SocketHttpClient.php on line 34