App Icons disappeared out of applauncher after movin to /owncloud subdir

With nginx I made an Owncloud installation in a subdirectory (www/owncloud) but the server nginx sees this as the root directory (eg https//123.456.789.012) . Now I want the server to see also a subdir in the webadres (eg. https//123.456.789.012/owncloud) and I inserted the example nginx config (link to documentation) . And changed it to my installation.

This does work fine but not the icons of the webclient. See picture. When inspecting in Firefox the leading subdirectory (/owncloud) is missing from the SVG, This I added in FF and the icon showsup (Files in this case).

Steps to reproduce
1. install owncloud as an instance for root-site address (https: //somesite) in ownsubdirectory (/var/www/owncloud)
2. Change sites-enabled to subdirectory-webaddres (https: //somesite/owncloud)
3. icons don't show in app launcher
4. site itself works OK.

Expected behaviour
Site is working AND icons in app launcher show up

Actual behaviour
icons in applauncher don't show

Server configuration
Operating system: Linux mo 4.1.19-v7+ #858 SMP Tue Mar 15 15:56:00 GMT 2016 armv7l GNU/Linux (raspberrypi)
Web server: nginx/1.6.2
Database:mysql Ver 14.14 Distrib 5.5.52, for debian-linux-gnu (armv7l) using readline 6.3
PHP version: PHP 5.6.27-0+deb8u1 (cli) (built: Oct 24 2016 18:22:27)
/ Zend Engine v2.6.0, Copyright / with Zend OPcache v7.0.6-dev
/ ownCloud version (see ownCloud admin page):
Updated from an older ownCloud or fresh install:updated from owncloud 9.0.0.19 to ownCloud 9.1.2 (stable)
Special configuration (external storage, external authentication, reverse proxy, server-side-encryption):
* Datastorage on external harddrive

ownCloud log (data/owncloud.log)

Please paste possible errors in the following code block, see https://central.owncloud.org/t/how-to-find-webserver-or-oc-logfile-enable-php-logfile/808 for more info

"reqId":"pzCAXy6sYBAXHWF5Le+y","remoteAddr":"213.233.219.200","app":"webdav","message":"Exception: {\"Message\":\"HTTP\\\/1.1 503 Storage not available\",\"Exception\":\"Sabre\\\\DAV\\\\Exception\\\\ServiceUnavailable\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(903): OCA\\\\DAV\\\\Connector\\\\Sabre\\\\ObjectTree->getNodeForPath('stack_linuxpete')\\n#1 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/CorePlugin.php(334): Sabre\\\\DAV\\\\Server->getPropertiesForPath('stack_linuxpete', Array, 1)\\n#2 [internal function]: Sabre\\\\DAV\\\\CorePlugin->httpPropFind(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#3 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/event\\\/lib\\\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\\n#4 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(459): Sabre\\\\Event\\\\EventEmitter->emit('method:PROPFIND', Array)\\n#5 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(248): Sabre\\\\DAV\\\\Server->invokeMethod(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#6 \\\/var\\\/www\\\/owncloud\\\/apps\\\/dav\\\/appinfo\\\/v1\\\/webdav.php(56): Sabre\\\\DAV\\\\Server->exec()\\n#7 \\\/var\\\/www\\\/owncloud\\\/remote.php(164): require_once('\\\/var\\\/www\\\/ownclo...')\\n#8 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/apps\\\/dav\\\/lib\\\/Connector\\\/Sabre\\\/ObjectTree.php\",\"Line\":159,\"User\":\"pieter\"}","level":4,"time":"2016-12-09T11:41:32+00:00","method":"PROPFIND","url":"\/owncloud\/remote.php\/webdav\/stack_linuxpete","user":"pieter"}
{"reqId":"7ZULVsmCJpvnaCu0Nwpa","remoteAddr":"213.233.219.200","app":"webdav","message":"Exception: {\"Message\":\"HTTP\\\/1.1 503 Storage not available\",\"Exception\":\"Sabre\\\\DAV\\\\Exception\\\\ServiceUnavailable\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(903): OCA\\\\DAV\\\\Connector\\\\Sabre\\\\ObjectTree->getNodeForPath('stack_linuxpete')\\n#1 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/CorePlugin.php(334): Sabre\\\\DAV\\\\Server->getPropertiesForPath('stack_linuxpete', Array, 1)\\n#2 [internal function]: Sabre\\\\DAV\\\\CorePlugin->httpPropFind(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#3 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/event\\\/lib\\\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\\n#4 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(459): Sabre\\\\Event\\\\EventEmitter->emit('method:PROPFIND', Array)\\n#5 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(248): Sabre\\\\DAV\\\\Server->invokeMethod(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#6 \\\/var\\\/www\\\/owncloud\\\/apps\\\/dav\\\/appinfo\\\/v1\\\/webdav.php(56): Sabre\\\\DAV\\\\Server->exec()\\n#7 \\\/var\\\/www\\\/owncloud\\\/remote.php(164): require_once('\\\/var\\\/www\\\/ownclo...')\\n#8 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/apps\\\/dav\\\/lib\\\/Connector\\\/Sabre\\\/ObjectTree.php\",\"Line\":159,\"User\":\"pieter\"}","level":4,"time":"2016-12-09T11:42:30+00:00","method":"PROPFIND","url":"\/owncloud\/remote.php\/webdav\/stack_linuxpete","user":"pieter"}
{"reqId":"xB5l7nU6GhPJe\/rARjhz","remoteAddr":"213.233.219.200","app":"PHP","message":"Automatically populating $HTTP_RAW_POST_DATA is deprecated and will be removed in a future version. To avoid this warning set 'always_populate_raw_post_data' to '-1' in php.ini and use the php:\/\/input stream instead. at Unknown#0","level":3,"time":"2016-12-09T11:44:49+00:00","method":"POST","url":"\/owncloud\/displaynames","user":"admin"}
{"reqId":"3rnTxQRopIgsuCb5hQ2x","remoteAddr":"213.233.219.200","app":"no app in context","message":"Exception: {\"Exception\":\"Sabre\\\\HTTP\\\\ClientHttpException\",\"Message\":\"Bad Request\",\"Code\":400,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Client.php(228): Sabre\\\\HTTP\\\\Client->send(Object(Sabre\\\\HTTP\\\\Request))\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Storage\\\/DAV.php(209): Sabre\\\\DAV\\\\Client->propFind('', Array, 1)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Storage\\\/Wrapper\\\/Wrapper.php(96): OC\\\\Files\\\\Storage\\\\DAV->opendir('')\\n#3 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Storage\\\/Wrapper\\\/Wrapper.php(96): OC\\\\Files\\\\Storage\\\\Wrapper\\\\Wrapper->opendir('')\\n#4 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Storage\\\/Wrapper\\\/Availability.php(105): OC\\\\Files\\\\Storage\\\\Wrapper\\\\Wrapper->opendir('')\\n#5 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Storage\\\/Wrapper\\\/Wrapper.php(96): OC\\\\Files\\\\Storage\\\\Wrapper\\\\Availability->opendir('')\\n#6 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Storage\\\/Wrapper\\\/Wrapper.php(96): OC\\\\Files\\\\Storage\\\\Wrapper\\\\Wrapper->opendir('')\\n#7 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Storage\\\/Wrapper\\\/Wrapper.php(96): OC\\\\Files\\\\Storage\\\\Wrapper\\\\Wrapper->opendir('')\\n#8 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(346): OC\\\\Files\\\\Storage\\\\Wrapper\\\\Wrapper->opendir('')\\n#9 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(397): OC\\\\Files\\\\Cache\\\\Scanner->getNewChildren('')\\n#10 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(377): OC\\\\Files\\\\Cache\\\\Scanner->handleChildren('', false, 3, '31356', true, 0)\\n#11 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Cache\\\/Scanner.php(311): OC\\\\Files\\\\Cache\\\\Scanner->scanChildren('', false, 3, 31356, true)\\n#12 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/View.php(1296): OC\\\\Files\\\\Cache\\\\Scanner->scan('', false)\\n#13 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/View.php(1337): OC\\\\Files\\\\View->getCacheEntry(Object(OCA\\\\Files_Antivirus\\\\AvirWrapper), '', 'stack_linuxpete')\\n#14 \\\/var\\\/www\\\/owncloud\\\/apps\\\/dav\\\/lib\\\/Connector\\\/Sabre\\\/ObjectTree.php(157): OC\\\\Files\\\\View->getFileInfo('stack_linuxpete')\\n#15 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(903): OCA\\\\DAV\\\\Connector\\\\Sabre\\\\ObjectTree->getNodeForPath('stack_linuxpete')\\n#16 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/CorePlugin.php(334): Sabre\\\\DAV\\\\Server->getPropertiesForPath('stack_linuxpete', Array, 1)\\n#17 [internal function]: Sabre\\\\DAV\\\\CorePlugin->httpPropFind(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#18 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/event\\\/lib\\\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\\n#19 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(459): Sabre\\\\Event\\\\EventEmitter->emit('method:PROPFIND', Array)\\n#20 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(248): Sabre\\\\DAV\\\\Server->invokeMethod(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#21 \\\/var\\\/www\\\/owncloud\\\/apps\\\/dav\\\/appinfo\\\/v1\\\/webdav.php(56): Sabre\\\\DAV\\\\Server->exec()\\n#22 \\\/var\\\/www\\\/owncloud\\\/remote.php(164): require_once('\\\/var\\\/www\\\/ownclo...')\\n#23 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/http\\\/lib\\\/Client.php\",\"Line\":160}","level":3,"time":"2016-12-09T11:45:01+00:00","method":"PROPFIND","url":"\/owncloud\/remote.php\/webdav\/stack_linuxpete","user":"pieter"}
{"reqId":"3rnTxQRopIgsuCb5hQ2x","remoteAddr":"213.233.219.200","app":"files_external","message":"Bad Request","level":3,"time":"2016-12-09T11:45:01+00:00","method":"PROPFIND","url":"\/owncloud\/remote.php\/webdav\/stack_linuxpete","user":"pieter"}
{"reqId":"3rnTxQRopIgsuCb5hQ2x","remoteAddr":"213.233.219.200","app":"webdav","message":"Exception: {\"Message\":\"HTTP\\\/1.1 503 Storage not available\",\"Exception\":\"Sabre\\\\DAV\\\\Exception\\\\ServiceUnavailable\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(903): OCA\\\\DAV\\\\Connector\\\\Sabre\\\\ObjectTree->getNodeForPath('stack_linuxpete')\\n#1 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/CorePlugin.php(334): Sabre\\\\DAV\\\\Server->getPropertiesForPath('stack_linuxpete', Array, 1)\\n#2 [internal function]: Sabre\\\\DAV\\\\CorePlugin->httpPropFind(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#3 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/event\\\/lib\\\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\\n#4 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(459): Sabre\\\\Event\\\\EventEmitter->emit('method:PROPFIND', Array)\\n#5 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(248): Sabre\\\\DAV\\\\Server->invokeMethod(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#6 \\\/var\\\/www\\\/owncloud\\\/apps\\\/dav\\\/appinfo\\\/v1\\\/webdav.php(56): Sabre\\\\DAV\\\\Server->exec()\\n#7 \\\/var\\\/www\\\/owncloud\\\/remote.php(164): require_once('\\\/var\\\/www\\\/ownclo...')\\n#8 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/apps\\\/dav\\\/lib\\\/Connector\\\/Sabre\\\/ObjectTree.php\",\"Line\":159,\"User\":\"pieter\"}","level":4,"time":"2016-12-09T11:45:01+00:00","method":"PROPFIND","url":"\/owncloud\/remote.php\/webdav\/stack_linuxpete","user":"pieter"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cli","message":"Memcache \\OC\\Memcache\\APCu not available for local cache","level":1,"time":"2016-12-09T11:45:01+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cli","message":"Memcache \\OC\\Memcache\\APCu not available for distributed cache","level":1,"time":"2016-12-09T11:45:02+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OCA\\Files\\BackgroundJob\\DeleteOrphanedItems job with ID 2","level":0,"time":"2016-12-09T11:45:03+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OCA\\Files\\BackgroundJob\\DeleteOrphanedItems job with ID 2","level":0,"time":"2016-12-09T11:45:03+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OCA\\Files\\BackgroundJob\\CleanupFileLocks job with ID 3","level":0,"time":"2016-12-09T11:45:03+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OCA\\Files\\BackgroundJob\\CleanupFileLocks job with ID 3","level":0,"time":"2016-12-09T11:45:03+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OCA\\Files_Versions\\BackgroundJob\\ExpireVersions job with ID 4","level":0,"time":"2016-12-09T11:45:03+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OCA\\Files_Versions\\BackgroundJob\\ExpireVersions job with ID 4","level":0,"time":"2016-12-09T11:45:03+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OCA\\Files_Trashbin\\BackgroundJob\\ExpireTrash job with ID 5","level":0,"time":"2016-12-09T11:45:03+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OCA\\Files_Trashbin\\BackgroundJob\\ExpireTrash job with ID 5","level":0,"time":"2016-12-09T11:45:03+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OCA\\Activity\\BackgroundJob\\EmailNotification job with ID 6","level":0,"time":"2016-12-09T11:45:03+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OCA\\Activity\\BackgroundJob\\EmailNotification job with ID 6","level":0,"time":"2016-12-09T11:45:03+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OCA\\Files\\BackgroundJob\\ScanFiles job with ID 1","level":0,"time":"2016-12-09T11:45:03+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OCA\\Files\\BackgroundJob\\ScanFiles job with ID 1","level":0,"time":"2016-12-09T11:45:04+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OCA\\Activity\\BackgroundJob\\ExpireActivities job with ID 7","level":0,"time":"2016-12-09T11:45:04+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OCA\\Activity\\BackgroundJob\\ExpireActivities job with ID 7","level":0,"time":"2016-12-09T11:45:04+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OCA\\DAV\\CardDAV\\SyncJob job with ID 8","level":0,"time":"2016-12-09T11:45:04+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OCA\\DAV\\CardDAV\\SyncJob job with ID 8","level":0,"time":"2016-12-09T11:45:04+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OCA\\Federation\\SyncJob job with ID 11","level":0,"time":"2016-12-09T11:45:04+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OCA\\Federation\\SyncJob job with ID 11","level":0,"time":"2016-12-09T11:45:05+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OC\\BackgroundJob\\Legacy\\RegularJob job with ID 13","level":0,"time":"2016-12-09T11:45:05+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OC\\BackgroundJob\\Legacy\\RegularJob job with ID 13","level":0,"time":"2016-12-09T11:45:05+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OCA\\UpdateNotification\\ResetTokenBackgroundJob job with ID 14","level":0,"time":"2016-12-09T11:45:05+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OCA\\UpdateNotification\\ResetTokenBackgroundJob job with ID 14","level":0,"time":"2016-12-09T11:45:05+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OCA\\Files_Sharing\\ExpireSharesJob job with ID 20","level":0,"time":"2016-12-09T11:45:05+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OCA\\Files_Sharing\\ExpireSharesJob job with ID 20","level":0,"time":"2016-12-09T11:45:05+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Run OC\\Authentication\\Token\\DefaultTokenCleanupJob job with ID 31","level":0,"time":"2016-12-09T11:45:05+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"no app in context","message":"Invalidating tokens older than 2016-12-08T11:45:05+00:00","level":1,"time":"2016-12-09T11:45:05+00:00","method":"--","url":"--","user":"--"}
{"reqId":"mGfvV\/WDZCar+jwQGmsy","remoteAddr":"","app":"cron","message":"Finished OC\\Authentication\\Token\\DefaultTokenCleanupJob job with ID 31","level":0,"time":"2016-12-09T11:45:05+00:00","method":"--","url":"--","user":"--"}
{"reqId":"nXbv1T2A3yKif1ia\/x0p","remoteAddr":"213.233.219.200","app":"webdav","message":"Exception: {\"Message\":\"HTTP\\\/1.1 503 Storage not available\",\"Exception\":\"Sabre\\\\DAV\\\\Exception\\\\ServiceUnavailable\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(903): OCA\\\\DAV\\\\Connector\\\\Sabre\\\\ObjectTree->getNodeForPath('stack_linuxpete')\\n#1 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/CorePlugin.php(334): Sabre\\\\DAV\\\\Server->getPropertiesForPath('stack_linuxpete', Array, 1)\\n#2 [internal function]: Sabre\\\\DAV\\\\CorePlugin->httpPropFind(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#3 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/event\\\/lib\\\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\\n#4 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(459): Sabre\\\\Event\\\\EventEmitter->emit('method:PROPFIND', Array)\\n#5 \\\/var\\\/www\\\/owncloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(248): Sabre\\\\DAV\\\\Server->invokeMethod(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#6 \\\/var\\\/www\\\/owncloud\\\/apps\\\/dav\\\/appinfo\\\/v1\\\/webdav.php(56): Sabre\\\\DAV\\\\Server->exec()\\n#7 \\\/var\\\/www\\\/owncloud\\\/remote.php(164): require_once('\\\/var\\\/www\\\/ownclo...')\\n#8 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/apps\\\/dav\\\/lib\\\/Connector\\\/Sabre\\\/ObjectTree.php\",\"Line\":159,\"User\":\"pieter\"}","level":4,"time":"2016-12-09T11:46:13+00:00","method":"PROPFIND","url":"\/owncloud\/remote.php\/webdav\/stack_linuxpete","user":"pieter"}

Integrity status for oC9+

Login as admin user into your ownCloud and access
http://example.com/index.php/settings/integrity/failed
paste the results here
Result: No errors have been found.

Hi there, upgrading to 9.1.3 solved the problem.

You normally have some config options in your config/config.php as well.