Fatal error: Uncaught Error: Class "BitPaySDK\Exceptions\BillException" not found in /home/bwjzwsaz/public_html/alumni.aaa.org.pk/vendor/bitpay/sdk/src/BitPaySDK/Exceptions/BillUpdateException.php:7 Stack trace: #0 {main} thrown in /home/bwjzwsaz/public_html/alumni.aaa.org.pk/vendor/bitpay/sdk/src/BitPaySDK/Exceptions/BillUpdateException.php on line 7