'debug' => true, in der config eingefügt und /var/log/php-errors.log erstellt
Habe folgende Werte nacheinander auf true gesetzt:
'appstoreenabled' => false,
'updatechecker' => false,
'has_internet_connection' => false,
'check_for_working_webdav' => false,
'check_for_working_htaccess' => false,
'check_for_working_wellknown_setup' => false,
Beim letzten Wert erhielt ich den Hinweis im Gelben Kasten oben mitte: "Failed to perform request for notifications".
Er verschwand aber wieder und ich blieb auf der Adminseite.
Jetzt ein kurzer Ausschnitt aus dem owncloud.log:
{"reqId":"CgwFzfBpDdlh74+n5z\/6","remoteAddr":"XXX.XXX.XXX.XXX","app":"PHP","message":"A session had already been started - ignoring session_start() at \/volume1\/web\/owncloud\/lib\/private\/session\/internal.php#95","level":0,"time":"2016-08-01T09:03:28+02:00","method":"GET","url":"\/index.php?logout=true&requesttoken=QzljfgsIDSIBBzQvJFN6ChYsdQkSBUoBCFUEJW1GNyA%3D%3A9U%2B9GdguLMceT13Mng6bQo8H9dvlX5tCcZidQfJ73bU%3D","user":"--"}
{"reqId":"MGXv7cf2q9vDBhG1ShYM","remoteAddr":"XXX.XXX.XXX.XXX","app":"webdav","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, 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 \\/volume1\\/web\\/owncloud\\/3rdparty\\/sabre\\/event\\/lib\\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\n#2 \\/volume1\\/web\\/owncloud\\/3rdparty\\/sabre\\/dav\\/lib\\/DAV\\/Server.php(446): Sabre\\Event\\EventEmitter->emit('beforeMethod', Array)\n#3 \\/volume1\\/web\\/owncloud\\/3rdparty\\/sabre\\/dav\\/lib\\/DAV\\/Server.php(248): Sabre\\DAV\\Server->invokeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\n#4 \\/volume1\\/web\\/owncloud\\/apps\\/dav\\/lib\\/server.php(150): Sabre\\DAV\\Server->exec()\n#5 \\/volume1\\/web\\/owncloud\\/apps\\/dav\\/appinfo\\/v2\\/remote.php(29): OCA\\DAV\\Server->exec()\n#6 \\/volume1\\/web\\/owncloud\\/remote.php(138): require_once('\\/volume1\\/web\\/ow...')\n#7 {main}\",\"File\":\"\\/volume1\\/web\\/owncloud\\/3rdparty\\/sabre\\/dav\\/lib\\/DAV\\/Auth\\/Plugin.php\",\"Line\":188,\"User\":false}","level":0,"time":"2016-08-01T09:12:47+02:00","method":"REPORT","url":"\/remote.php\/dav\/calendars\/XXX\/XXX\/","user":"--"}
{"reqId":"9N0\/YfnIa4jM+S9QawXc","remoteAddr":"","app":"cli","message":"Memcache \OC\Memcache\APCu not available for local cache","level":1,"time":"2016-08-01T09:15:02+02:00","method":"--","url":"--","user":"--"}
{"reqId":"9N0\/YfnIa4jM+S9QawXc","remoteAddr":"","app":"cli","message":"Memcache \OC\Memcache\APCu not available for distributed cache","level":1,"time":"2016-08-01T09:15:02+02:00","method":"--","url":"--","user":"--"}