Nextcloud Sabre: No 'Authorization: Basic' header found

[dofl]

I'm investigating high CPU usage on my server since June without any changes in users, etc. and I found this error in the nextcloud.log.

Something is requesting info, but fails? It's a local process, but I coudn't identify which one. Could it be z-push? Any idea on how to investigate further?

{"reqId":"89Om6aureDzvUg74N/DZ","remoteAddr":"127.0.0.1","app":"caldav","message":"Exception: {"Message":"HTTP\/1.1 401 No 'Authorization: Basic' header found. Either the client didn't send one, or the server is mis-configured","Exception":"Sabre\\DAV\\Exception\\NotAuthenticated","Code":0,"Trace":"#0 [internal function]: Sabre\\DAV\\Auth\\Plugin->beforeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\n#1 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/event\/lib\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\n#2 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(446): Sabre\\Event\\EventEmitter->emit('beforeMethod', Array)\n#3 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(248): Sabre\\DAV\\Server->invokeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\n#4 \/usr\/local\/lib\/owncloud\/apps\/dav\/appinfo\/v1\/caldav.php(88): Sabre\\DAV\\Server->exec()\n#5 \/usr\/local\/lib\/owncloud\/remote.php(165): require_once('\/usr\/local\/lib\/...')\n#6 {main}","File":"\/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Auth\/Plugin.php","Line":188,"User":false}","level":0,"time":"2017-07-26 15:07:24","method":"OPTIONS","url":"/cloud/remote.php/caldav/calendars/my@e-mailaddress.com/","user":"--","version":"9.1.5.2"}

{"reqId":"Q0XPvE/CalvkstD2wCi/","remoteAddr":"127.0.0.1","app":"carddav","message":"Exception: {"Message":"HTTP\/1.1 401 No 'Authorization: Basic' header found. Either the client didn't send one, or the server is mis-configured","Exception":"Sabre\\DAV\\Exception\\NotAuthenticated","Code":0,"Trace":"#0 [internal function]: Sabre\\DAV\\Auth\\Plugin->beforeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\n#1 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/event\/lib\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\n#2 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(446): Sabre\\Event\\EventEmitter->emit('beforeMethod', Array)\n#3 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(248): Sabre\\DAV\\Server->invokeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\n#4 \/usr\/local\/lib\/owncloud\/apps\/dav\/appinfo\/v1\/carddav.php(88): Sabre\\DAV\\Server->exec()\n#5 \/usr\/local\/lib\/owncloud\/remote.php(165): require_once('\/usr\/local\/lib\/...')\n#6 {main}","File":"\/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Auth\/Plugin.php","Line":188,"User":false}","level":0,"time":"2017-07-26 15:07:25","method":"OPTIONS","url":"/cloud/remote.php/carddav/addressbooks/my@e-mailaddress.com/","user":"--","version":"9.1.5.2"}

{"reqId":"7IyXufceKW29+3NUcclr","remoteAddr":"127.0.0.1","app":"caldav","message":"Exception: {"Message":"HTTP\/1.1 401 No 'Authorization: Basic' header found. Either the client didn't send one, or the server is mis-configured","Exception":"Sabre\\DAV\\Exception\\NotAuthenticated","Code":0,"Trace":"#0 [internal function]: Sabre\\DAV\\Auth\\Plugin->beforeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\n#1 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/event\/lib\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\n#2 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(446): Sabre\\Event\\EventEmitter->emit('beforeMethod', Array)\n#3 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(248): Sabre\\DAV\\Server->invokeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\n#4 \/usr\/local\/lib\/owncloud\/apps\/dav\/appinfo\/v1\/caldav.php(88): Sabre\\DAV\\Server->exec()\n#5 \/usr\/local\/lib\/owncloud\/remote.php(165): require_once('\/usr\/local\/lib\/...')\n#6 {main}","File":"\/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Auth\/Plugin.php","Line":188,"User":false}","level":0,"time":"2017-07-26 15:08:11","method":"OPTIONS","url":"/cloud/remote.php/caldav/calendars/my@e-mailaddress.com/","user":"--","version":"9.1.5.2"}

{"reqId":"Ol6p2l7q24j19kiHFdvD","remoteAddr":"127.0.0.1","app":"carddav","message":"Exception: {"Message":"HTTP\/1.1 401 No 'Authorization: Basic' header found. Either the client didn't send one, or the server is mis-configured","Exception":"Sabre\\DAV\\Exception\\NotAuthenticated","Code":0,"Trace":"#0 [internal function]: Sabre\\DAV\\Auth\\Plugin->beforeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\n#1 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/event\/lib\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\n#2 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(446): Sabre\\Event\\EventEmitter->emit('beforeMethod', Array)\n#3 \/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(248): Sabre\\DAV\\Server->invokeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\n#4 \/usr\/local\/lib\/owncloud\/apps\/dav\/appinfo\/v1\/carddav.php(88): Sabre\\DAV\\Server->exec()\n#5 \/usr\/local\/lib\/owncloud\/remote.php(165): require_once('\/usr\/local\/lib\/...')\n#6 {main}","File":"\/usr\/local\/lib\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Auth\/Plugin.php","Line":188,"User":false}","level":0,"time":"2017-07-26 15:08:12","method":"OPTIONS","url":"/cloud/remote.php/carddav/addressbooks/my@e-mailaddress.com/","user":"--","version":"9.1.5.2"}

[yodax]

Which version of NextCloud are you on? The one from master?

[dofl]

Yes, Nextcloud 10.0.5 (stable)

[dofl]

I found some similar problems in this topic: https://help.nextcloud.com/t/after-11-upgrade-sabre-web-dav-error-in-log/7361

It could be or Davdroid again, or Rainloop. But it's error's are with the sync of carddav as well as the caldav.

[yodax]

Master is on version 12, you could try that. It does seem like an external not sending the correct authentication. I saw something similar on the forum a while back.

[dofl]

I'm only updating based on releases, I thought you meant the latest release. My fault.
It's annoying as logs are unusable because of the recurring error and there is no information on what it could be.

[yodax]

I found the topic: https://discourse.mailinabox.email/t/authentication-error-for-one-user-help-to-debug/2334

No solution though