Error deleting file "Folder name" in the web deleting folder from SMB share but it gets deleted

I have an smb share, Windows server, that I have mounted on the Ubuntu server, Ubuntu 16.10.
When I delete a folder there I get the error message
Error deleting file “Folder name”

The folder is mounted with:
//Fileserver/share /mnt/share cifs credentials=/root/.smb/auth.smb,rw,file_mode=0777,dir_mode=0777,gid=33,uid=33,nounix,iocharset=utf8 0 0

If I refresh the page, or go upp to the folder above and back again the folder is gone.

The log file, with debug=0, shows:
{“reqId”:“jIpX/tNjZctxNYq2dZOu”,“remoteAddr”:“213.179.28.33”,“app”:“webdav”,“message”:“Exception: {“Message”:“HTTP\/1.1 403 Forbidden”,“Exception”:“Sabre\\DAV\\Exception\\Forbidden”,“Code”:0,“Trace”:”#0 \/var\/www\/nextcloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Tree.php(179): OCA\\DAV\\Connector\\Sabre\\Directory->delete()\n#1 \/var\/www\/nextcloud\/3rdparty\/sabre\/dav\/lib\/DAV\/CorePlugin.php(287): Sabre\\DAV\\Tree->delete(‘TestProjekt\/QD3…’)\n#2 [internal function]: Sabre\\DAV\\CorePlugin->httpDelete(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\n#3 \/var\/www\/nextcloud\/3rdparty\/sabre\/event\/lib\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\n#4 \/var\/www\/nextcloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(479): Sabre\\Event\\EventEmitter->emit(‘method:DELETE’, Array)\n#5 \/var\/www\/nextcloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(254): Sabre\\DAV\\Server->invokeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\n#6 \/var\/www\/nextcloud\/apps\/dav\/appinfo\/v1\/webdav.php(60): Sabre\\DAV\\Server->exec()\n#7 \/var\/www\/nextcloud\/remote.php(165): require_once(’\/var\/www\/nextcl…’)\n#8 {main}",“File”:"\/var\/www\/nextcloud\/apps\/dav\/lib\/Connector\/Sabre\/Directory.php",“Line”:279,“User”:“qdadmin”}",“level”:0,“time”:“2017-03-31T13:31:17+00:00”,“method”:“DELETE”,“url”:"/remote.php/webdav/TestProjekt/QD3/hjkhjkhkh",“user”:“qdadmin”,“version”:“11.0.2.7”}

I am getting the same thing. It happened after I installed Nextcloud on server 2008 r2, and then selected our data drive to sync. It only enumerated a few of the folders in the Data folder, so I decided to delete the sync connection, then delete the nextcloud data via the web browser. All the other folders deleted, but not the Data folder.