Fatal error: Uncaught Error: Class "setasign\SetaPDF2\Signer\Timestamp\Module\Rfc3161\Rfc3161" not found in D:\Apache24\htdocs\vendor\setasign\setapdf-signer\library\SetaPDF\Signer\Timestamp\Module\Rfc3161\Curl.php:22 Stack trace: #0 {main} thrown in D:\Apache24\htdocs\vendor\setasign\setapdf-signer\library\SetaPDF\Signer\Timestamp\Module\Rfc3161\Curl.php on line 22