Exception during login:
SimpleSAML_Error_Exception: Could not find the metadata of an IdP with entity ID 'https://testidp2.aai.dfn.de/idp/shibboleth'
Backtrace:
8 /usr/share/nginx/www/wissensservice/simplesamlphp/modules/saml/lib/Auth/Source/SP.php:134 (sspmod_saml_Auth_Source_SP::getIdPMetadata)
7 /usr/share/nginx/www/wissensservice/simplesamlphp/modules/saml/lib/Auth/Source/SP.php:308 (sspmod_saml_Auth_Source_SP::startSSO)
6 /usr/share/nginx/www/wissensservice/simplesamlphp/modules/saml/lib/Auth/Source/SP.php:390 (sspmod_saml_Auth_Source_SP::authenticate)
5 /usr/share/nginx/www/wissensservice/simplesamlphp/lib/SimpleSAML/Auth/Default.php:65 (SimpleSAML_Auth_Default::initLogin)
4 /usr/share/nginx/www/wissensservice/simplesamlphp/lib/SimpleSAML/Auth/Simple.php:136 (SimpleSAML_Auth_Simple::login)
3 /usr/share/nginx/www/wissensservice/drupal/sites/all/modules/custom/wissensservice/wissensservice_auth/wissensservice_auth_shib/wissensservice_auth_shib.module:140 (wissensservice_auth_shib_loginpage)
2 [builtin] (call_user_func_array)
1 /usr/share/nginx/www/wissensservice/drupal/includes/menu.inc:527 (menu_execute_active_handler)
0 /usr/share/nginx/www/wissensservice/drupal/index.php:21 (N/A)