Fatal error: Uncaught Error: Class "FG\ASN1\AbstractString" not found in /home/pay/public_html/vendor/bitcoin/fgrosse/phpasn1/lib/ASN1/Universal/VisibleString.php:16 Stack trace: #0 {main} thrown in /home/pay/public_html/vendor/bitcoin/fgrosse/phpasn1/lib/ASN1/Universal/VisibleString.php on line 16