Fatal error: Uncaught Error: Interface 'Mdanter\Ecc\Crypto\Signature\SignatureInterface' not found in /home/opcon/src/dat/lib/vendor/bk/mdanter/ecc/src/Crypto/Signature/Signature.php:32 Stack trace: #0 {main} thrown in /home/opcon/src/dat/lib/vendor/bk/mdanter/ecc/src/Crypto/Signature/Signature.php on line 32