Fatal error: Uncaught Error: Class 'SimpleSAML_Auth_Source' not found in /var/www/alldocs/home/bwilliams/webdev_orig/simplesamlphp_sp.disabled/modules/authYubiKey/lib/Auth/Source/YubiKey.php:42 Stack trace: #0 {main} thrown in /var/www/alldocs/home/bwilliams/webdev_orig/simplesamlphp_sp.disabled/modules/authYubiKey/lib/Auth/Source/YubiKey.php on line 42