Error in image creation

Steps to reproduce

  1. Upload a mp3 file

Expected behaviour

Tell us what should happen
No errors in log file

Actual behaviour

Tell us what happens instead
{“reqId”:“8JX26PjMA4VI9G3VN4qw”,“level”:3,“time”:“2020-04-09T17:35:36+02:00”,“remoteAddr”:“XXX.XXX.XXX.XXX”,“user”:“MYUSER”,“app”:“PHP”,“method”:“GET”,“url”:"/owncloud/remote.php/dav/files/MYUSER/Medien/Musik/S%C3%B6hne%20Mannheims/S%C3%B6hne%20Mannheims%20-%20Geh%20Davon%20Aus.mp3?c=f748cd760cd20ef0563eff22c9081ad2&x=32&y=32&forceIcon=0&preview=1",“message”:“imagecreatefromstring(): Empty string or invalid image at /var/www/html/owncloud/lib/private/legacy/image.php#573”}

Server configuration

Operating system:
Raspbian 10 (buster)
Web server:
Apache/2.4.38 (Raspbian)
PHP version:
PHP 7.3.14-1~deb10u1
ownCloud version: (see ownCloud admin page)
10.4.0 (stable)
Updated from an older ownCloud or fresh install:
Where did you install ownCloud from:
Zip Archive
Signing status (ownCloud 9.0 and above):

Login as admin user into your ownCloud and access 
paste the results into and puth the link here.

The content of config/config.php:

Log in to the web-UI with an administrator account and click on
'admin' -> 'Generate Config Report' -> 'Download ownCloud config report'
This report includes the config.php settings, the list of activated apps
and other details in a well sanitized form.


If you have access to your command line run e.g.:
sudo -u www-data php occ config:list system
from within your ownCloud installation folder

*ATTENTION:* Do not post your config.php file in public as is. Please use one of the above
methods whenever possible. Both, the generated reports from the web-ui and from occ config:list
consistently remove sensitive data. You still may want to review the report before sending.
If done manually then it is critical for your own privacy to dilligently
remove *all* host names, passwords, usernames, salts and other credentials before posting.
You should assume that attackers find such information and will use them against your systems.

List of activated apps:

If you have access to your command line run e.g.:
sudo -u www-data php occ app:list
from within your ownCloud installation folder.


  • activity: 2.5.3
  • audioplayer: 2.8.4
  • brute_force_protection: 1.0.1
  • calendar: 1.6.4
  • comments: 0.3.0
  • configreport: 0.2.0
  • contacts: 1.5.5
  • dav: 0.5.0
  • extract: 1.2.3
  • federatedfilesharing: 0.5.0
  • federation: 0.1.0
  • files: 1.5.2
  • files_clipboard: 1.0.2
  • files_external: 0.7.1
  • files_mediaviewer: 1.0.2
  • files_pdfviewer: 0.11.1
  • files_sharing: 0.12.0
  • files_texteditor: 2.3.0
  • files_trashbin: 0.9.1
  • files_versions: 1.3.0
  • firstrunwizard: 1.2.0
  • market: 0.5.0
  • metadata: 0.10.0
  • music: 0.13.2
  • notifications: 0.5.0
  • password_policy: 2.1.2
  • provisioning_api: 0.5.0
  • systemtags: 0.3.0
  • templateeditor: 0.4.0
  • theme-blindbaucloud: 2.0.0
  • updatenotification: 0.2.1


  • encryption
  • external
  • user_external

Are you using external storage, if yes which one: local/smb/sftp/…

Are you using encryption: yes/no

Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/…

Client configuration


Operating system:


Web server error log

Insert your webserver log here

ownCloud log (data/owncloud.log)

Insert your ownCloud log here

Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log 
c) ...


i did the following simple search:

and found this existing thread:

which points to an issue reported to the ownCloud team here:

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