Warning: include(Sign.php): failed to open stream: No such file or directory in C:\xampp\htdocs\DIAN_WS\BinarySecurityToken\SOAP.php on line 4

Warning: include(): Failed opening 'Sign.php' for inclusion (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\DIAN_WS\BinarySecurityToken\SOAP.php on line 4

Fatal error: Uncaught Error: Class 'Stenfrank\UBL21dian\Sign' not found in C:\xampp\htdocs\DIAN_WS\BinarySecurityToken\SOAP.php:13 Stack trace: #0 {main} thrown in C:\xampp\htdocs\DIAN_WS\BinarySecurityToken\SOAP.php on line 13