Error "File deleted from server" won't go away in sync client (Linux Mint)

Nextcloud version (eg, 12.0.2): 15.0.11
Operating system and version (eg, Ubuntu 17.04): Server: don’t Know. Local: Linux Mint 19.1
Apache or nginx version (eg, Apache 2.4.25): I know its nginx but not which version.
PHP version (eg, 7.1): ?
Sync Client: 2.6.0

(This cloud is hosted with a provider, I cannot access anything “behind” the NC interface. The provider told me there is nothing they can do to help me)

The issue you are facing:


German “Die Datei wurde vom Server gelöscht” or “Löschen nicht erlaub, Wiederherstellung; Wiederherstellung fehlgeschlagen: Die Datei wurde vom Server gelöscht”
Englisch: “file deleted from server” or “deleting not allowed, recovery; recovery failed: the file was deleted from server”

Is this the first time you’ve seen this error? (Y/N):
No. It has been there for weeks now.

Steps to replicate it:
It happens sometimes when I move files on the computer, but not every time.

The output of your Nextcloud log in Admin > Logging:

{"reqId":"qUG3WMf8HEFffucJgbLa","level":3,"time":"2019-10-25T15:26:17+00:00","remoteAddr":"89.12.9.226","user":"mitarbeiter-in","app":"PHP","method":"GET","url":"\/remote.php\/dav\/files\/mitarbeiter-in\/Rechtsversammlung\/RV-Tabelle%20(ab%202018)%202019-10-25.ods","message":"Cannot modify header information - headers already sent by (output started at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php:80) at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php#63","userAgent":"Mozilla\/5.0 (Windows) mirall\/2.6.0stable-Win32 (build 20190927) (Nextcloud)","version":"15.0.11.1"}
{"reqId":"qUG3WMf8HEFffucJgbLa","level":3,"time":"2019-10-25T15:26:17+00:00","remoteAddr":"89.12.9.226","user":"mitarbeiter-in","app":"PHP","method":"GET","url":"\/remote.php\/dav\/files\/mitarbeiter-in\/Rechtsversammlung\/RV-Tabelle%20(ab%202018)%202019-10-25.ods","message":"Cannot modify header information - headers already sent by (output started at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php:80) at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php#63","userAgent":"Mozilla\/5.0 (Windows) mirall\/2.6.0stable-Win32 (build 20190927) (Nextcloud)","version":"15.0.11.1"}
{"reqId":"qUG3WMf8HEFffucJgbLa","level":3,"time":"2019-10-25T15:26:17+00:00","remoteAddr":"89.12.9.226","user":"mitarbeiter-in","app":"PHP","method":"GET","url":"\/remote.php\/dav\/files\/mitarbeiter-in\/Rechtsversammlung\/RV-Tabelle%20(ab%202018)%202019-10-25.ods","message":"Cannot modify header information - headers already sent by (output started at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php:80) at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php#63","userAgent":"Mozilla\/5.0 (Windows) mirall\/2.6.0stable-Win32 (build 20190927) (Nextcloud)","version":"15.0.11.1"}
{"reqId":"qUG3WMf8HEFffucJgbLa","level":3,"time":"2019-10-25T15:26:17+00:00","remoteAddr":"89.12.9.226","user":"mitarbeiter-in","app":"PHP","method":"GET","url":"\/remote.php\/dav\/files\/mitarbeiter-in\/Rechtsversammlung\/RV-Tabelle%20(ab%202018)%202019-10-25.ods","message":"Cannot modify header information - headers already sent by (output started at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php:80) at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php#63","userAgent":"Mozilla\/5.0 (Windows) mirall\/2.6.0stable-Win32 (build 20190927) (Nextcloud)","version":"15.0.11.1"}
{"reqId":"qUG3WMf8HEFffucJgbLa","level":3,"time":"2019-10-25T15:26:17+00:00","remoteAddr":"89.12.9.226","user":"mitarbeiter-in","app":"PHP","method":"GET","url":"\/remote.php\/dav\/files\/mitarbeiter-in\/Rechtsversammlung\/RV-Tabelle%20(ab%202018)%202019-10-25.ods","message":"Cannot modify header information - headers already sent by (output started at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php:80) at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php#63","userAgent":"Mozilla\/5.0 (Windows) mirall\/2.6.0stable-Win32 (build 20190927) (Nextcloud)","version":"15.0.11.1"}
{"reqId":"qUG3WMf8HEFffucJgbLa","level":3,"time":"2019-10-25T15:26:17+00:00","remoteAddr":"89.12.9.226","user":"mitarbeiter-in","app":"PHP","method":"GET","url":"\/remote.php\/dav\/files\/mitarbeiter-in\/Rechtsversammlung\/RV-Tabelle%20(ab%202018)%202019-10-25.ods","message":"Cannot modify header information - headers already sent by (output started at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php:80) at \/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php#63","userAgent":"Mozilla\/5.0 (Windows) mirall\/2.6.0stable-Win32 (build 20190927) (Nextcloud)","version":"15.0.11.1"}
{"reqId":"WQQbwJztyrdCyCAFen5K","level":4,"time":"2019-10-25T15:26:31+00:00","remoteAddr":"89.12.9.226","user":"mitarbeiter-in","app":"webdav","method":"GET","url":"\/remote.php\/dav\/files\/mitarbeiter-in\/Rechtsversammlung\/RV-Tabelle%20(ab%202018)%202019-10-25.ods","message":{"Exception":"OCP\\Encryption\\Exceptions\\GenericEncryptionException","Message":"Bad Signature","Code":0,"Trace":[{"file":"\/data\/www\/nextcloud67\/apps\/encryption\/lib\/Crypto\/Crypt.php","line":467,"function":"checkSignature","class":"OCA\\Encryption\\Crypto\\Crypt","type":"->","args":["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",null,"fab4376e254fa4c9123199be821e63ab6acb5c345127511d2b2e6ab9e745c39a"]},{"file":"\/data\/www\/nextcloud67\/apps\/encryption\/lib\/Crypto\/Encryption.php","line":379,"function":"symmetricDecryptFileContent","class":"OCA\\Encryption\\Crypto\\Crypt","type":"->","args":["*** sensitive parameter replaced ***",null,"AES-256-CTR",2,"*** sensitive parameter replaced ***"]},{"file":"\/data\/www\/nextcloud67\/lib\/private\/Files\/Stream\/Encryption.php","line":479,"function":"decrypt","class":"OCA\\Encryption\\Crypto\\Encryption","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"\/data\/www\/nextcloud67\/lib\/private\/Files\/Stream\/Encryption.php","line":299,"function":"readCache","class":"OC\\Files\\Stream\\Encryption","type":"->","args":[]},{"function":"stream_read","class":"OC\\Files\\Stream\\Encryption","type":"->","args":[6053]},{"file":"\/data\/www\/nextcloud67\/3rdparty\/icewind\/streams\/src\/Wrapper.php","line":91,"function":"fread","args":[null,8192]},{"file":"\/data\/www\/nextcloud67\/3rdparty\/icewind\/streams\/src\/CallbackWrapper.php","line":98,"function":"stream_read","class":"Icewind\\Streams\\Wrapper","type":"->","args":[8192]},{"function":"stream_read","class":"Icewind\\Streams\\CallbackWrapper","type":"->","args":[8192]},{"file":"\/data\/www\/nextcloud67\/3rdparty\/sabre\/http\/lib\/Sapi.php","line":80,"function":"stream_copy_to_stream","args":[null,null,"260381"]},{"file":"\/data\/www\/nextcloud67\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php","line":498,"function":"sendResponse","class":"Sabre\\HTTP\\Sapi","type":"::","args":[{"__class__":"Sabre\\HTTP\\Response"}]},{"file":"\/data\/www\/nextcloud67\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php","line":254,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->","args":[{"absoluteUrl":"https:\/\/cloud.demokratische-schule-x.de\/remote.php\/dav\/files\/mitarbeiter-in\/Rechtsversammlung\/RV-Tabelle%20(ab%202018)%202019-10-25.ods","__class__":"Sabre\\HTTP\\Request"},{"__class__":"Sabre\\HTTP\\Response"}]},{"file":"\/data\/www\/nextcloud67\/apps\/dav\/lib\/Server.php","line":301,"function":"exec","class":"Sabre\\DAV\\Server","type":"->","args":[]},{"file":"\/data\/www\/nextcloud67\/apps\/dav\/appinfo\/v2\/remote.php","line":35,"function":"exec","class":"OCA\\DAV\\Server","type":"->","args":[]},{"file":"\/data\/www\/nextcloud67\/remote.php","line":163,"args":["\/data\/www\/nextcloud67\/apps\/dav\/appinfo\/v2\/remote.php"],"function":"require_once"}],"File":"\/data\/www\/nextcloud67\/apps\/encryption\/lib\/Crypto\/Crypt.php","Line":487,"Hint":"Ung\u00fcltige Signatur","CustomMessage":"--"},"userAgent":"Mozilla\/5.0 (Windows) mirall\/2.6.0stable-Win32 (build 20190927) (Nextcloud)","version":"15.0.11.1"}

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

I dont have access to that.

The output of your Apache/nginx/system log in /var/log/____:

I dopt have access to that
2 Likes

Hi,
bit late - but this might just help someone else. In my case, this was simply a missing file.
No idea how this happened: the file was physically removed, but there was a database entry left pointing to it.
All you have to do is to delete the entry from oc_filecache in your database, using some DB tool like phpMyAdmin. Make sure it is the right file ;).

Find out which file is missing - then SEARCH for it in the database.
In your case: search for
RV-Tabelle%20(ab%202018)%202019-10-25.ods
in all database files.
I had to delete the missing file entry from oc_filecache (using NC 18).

OCC files:scan --all and files:cleanup did not help in my case! The file also wasn’t locked.

Hi

I have recently been getting this error too.

I am running NC 23.0.3 and using the Linux Desktop Client 3.4.4 (from the nextcloud stable ppa repository on KDE Neon)

It started happening after I deleted a couple of files and added a new file in a hidden folder from the file manager on the client side (desktop). Both changes (deletion and addition) got sync to the server and I could see that using the NC web ui. Both folders were perfectly synced. However, the desktop client was showing mistakes saying about that three files (the two deleted and the one added) that they were deleted from the server and could not be located.

If I clicked on “force sync now” then everything looked alright (I could briefly see the sync of three files and the green tick appeared again). But then a moment later the three errors would show up again. Similarly if I “pause sync” then “resume sync” the three errors show up whereas when I do a “force sync now” they disappear (but then reappear a moment later or if I then do a pause + resume)

Since these error showed up I cannot think that folder any longer, in that if I add new files, either from Desktop or from the web ui, it doesn’t get synced and more errors just show up (even when doing s “force sync now”, the green tick appears but the files don’t actually get synced).

Things I have tried:
occ files:cleanup >> does nothing, it says 0 entry deleted for both file cache and mount.
occ files:scan --all >> after that I get lots more errors on that same hierarchy of hidden folders (so the same errors as above + many others in siblings folders (which are also hidden)

Looking more closely at the error message I have noticed something strange which might be the cause of the problem:

The massage looks like this (also see screenshot for the actual message):
Document/.goo/.foo/filename : File was deleted from the server (File with name Document/.goo/filename could not be located)

As you can see the two paths in the message are NOT the same, the second path is one folder above in the hierarchy so it seems it is not looking for the file ion the right place.

Additional info:
Those files are not an external volume but in the main nextcloud folder.
Those files are in a hidden folder which is itself in a hidden folder
I have never had an issue syncing those folders until recently (though I don’t use those often as they are used for old backups configs for clients so I can’t tell exactly when the issue started).
I cannot try the solution above as I am not confident enough manipulating the database manually (nor I think a user should have to do this so they is probably a bug somewhere)

nextcloud_error

I think the problem is the dot folder or both dot folders. Do you really need it? If not you can perhaps delete then and re-scan all.

Then i found an issue. Perhaps there is an option in the client like written in the issue.

Thank you for your reply.

I thought about this and you are right that I don’t need to have hidden inside of hidden inside of hidden! It was done that way to keep archive stuff out of the way but it has become redundant now. I will try to restructure and see if that helps. However I have never had issues with it before so it seems to be a new bug that NC devs might want to be aware of as it might have other implications (especially with the behaviour of the sync client being strange and the error messages being off).

I had found already the issue you’ve mentioned but the solution there was not good here (I have already ticked off the syncing of hidden files/folders option and other hidden folders are syncing just fine)

Also I should add that some of the siblings folders (in that weird folder/.hidden/.hidden/.hidden hierarchy) are syncing just fine. The error only affect some of the folders with no obvious patterns as to why that is

1 Like

Ok so changing the directory structure and removing one layer of hidden folders did help. All files got synced properly. But surely this is still an odd behaviour.

Seems like a somewhat exotic case to me, but nevertheless it would definitely be desirable to report such a bug to GitHub NC Desktop Client, so that the developers are aware of and so be able to increase the rubustness of the sync process further.