SimpleSAMLphp error report

SimpleSAMLphp Error Report Message from user: snaha o přihlášení na openstreetmap pro nahlášení chyby budovy na RUIAN Exception: SimpleSAML_Error_Error: UNHANDLEDEXCEPTION Backtrace: 0 /var/www/simplesamlphp/www/module.php:180 (N/A) Caused by: Exception: Contacting request_token endpoint on the OAuth Provider [statuscode: unknown]: :https://www.openstreetmap.org/oauth/request_token?oauth_callback=http%3A%2F%2Fruian.poloha.net%2Fsimplesaml%2Fmodule.php%2Fauthosm%2Flinkback.php%3Fstateid%3D_c4d26469434846fc65e82538ea99fc56f72bec2a4a&oauth_consumer_key=6PzdmV00PZ0mX9SRkbCb4uxoWZyUrCFmpzwOiMev&oauth_nonce=6c4d6facfc8efd526b7378182252e53d&oauth_signature=k8XL96muA9%2BrlVGhLSIZVNe3TtM%3D&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1508241509&oauth_version=1.0 Backtrace: 7 /var/www/simplesamlphp/modules/oauth/lib/Consumer.php:65 (sspmod_oauth_Consumer::getHTTP) 6 /var/www/simplesamlphp/modules/oauth/lib/Consumer.php:76 (sspmod_oauth_Consumer::getRequestToken) 5 /var/www/simplesamlphp/modules/authosm/lib/Auth/Source/OSM.php:72 (sspmod_authosm_Auth_Source_OSM::authenticate) 4 /var/www/simplesamlphp/lib/SimpleSAML/Auth/Source.php:193 (SimpleSAML_Auth_Source::initLogin) 3 /var/www/simplesamlphp/lib/SimpleSAML/Auth/Simple.php:141 (SimpleSAML_Auth_Simple::login) 2 /var/www/simplesamlphp/lib/SimpleSAML/Auth/Simple.php:83 (SimpleSAML_Auth_Simple::requireAuth) 1 /var/www/simplesamlphp/modules/core/www/as_login.php:33 (require) 0 /var/www/simplesamlphp/www/module.php:137 (N/A) URL: http://ruian.poloha.net/simplesaml/module.php/core/as_login.php Host: mapserv Directory: /var/www/simplesamlphp Track ID: ac280c89a4 Version: 1.14.8 Report ID: d16091bf Referer: http://ruian.poloha.net/building.php This message was sent using SimpleSAMLphp. Visit the SimpleSAMLphp homepage.