Fatal error: Uncaught exception 'SimpleSAML_Error_UnserializableException' with message 'No private key found in metadata.' in C:\xampp\htdocs\ssp\lib\SimpleSAML\Auth\Default.php:62 Stack trace: #0 C:\xampp\htdocs\ssp\lib\SimpleSAML\Auth\Simple.php(127): SimpleSAML_Auth_Default::initLogin('default-sp', 'https://paybill...', NULL, Array) #1 C:\xampp\htdocs\ssp\lib\SimpleSAML\Auth\Simple.php(70): SimpleSAML_Auth_Simple->login(Array) #2 C:\xampp\htdocs\newpaybills\index.php(38): SimpleSAML_Auth_Simple->requireAuth(Array) #3 {main} thrown in C:\xampp\htdocs\ssp\lib\SimpleSAML\Auth\Default.php on line 62