Fatal error: Uncaught Error: Interface "Mdanter\Ecc\Math\GmpMathInterface" not found in /home/pay/public_html/vendor/bitcoin/mdanter/ecc/src/Math/DebugDecorator.php:10 Stack trace: #0 {main} thrown in /home/pay/public_html/vendor/bitcoin/mdanter/ecc/src/Math/DebugDecorator.php on line 10