Fatal error: Uncaught Error: Interface "BTCPayServer\Http\ResponseInterface" not found in /home/mydemotec/public_html/frun/vendor/btcpayserver/btcpayserver-greenfield-php/src/Http/Response.php:7 Stack trace: #0 {main} thrown in /home/mydemotec/public_html/frun/vendor/btcpayserver/btcpayserver-greenfield-php/src/Http/Response.php on line 7