That's probably a security setting of your php. Check you php.ini (often the execution of shell commands is disabled for security reasons).
As alternative, you can do a manual upgrade.
how i can upgrade Owncloud manually and after the upgrade works all normaly and logos are same..
Such things can normally be found in the documentation.
- make backup
- delete all files except data/ and config/-folder
- get code of new ownCloud version (owncloud.org/changelog)
- extract code (fix permissions)
- run occ upgrade on terminal
- activate all apps you need.
I dont known why web updater not work.
Nextcloud web updater work great..
I have same PHP settings..both servers.
Because of the problems with the ownCloud updater, Nextcloud decided to write a new updater app. The code base of Nextcloud and ownCloud is very similar, I'm not sure if you can make the Nextcloud updater also work with ownCloud.
i have two different server NextCloud and Owncloud.
I use them separate..
You could ask here to fork the Nextcloud updater app. Not sure in terms of licensing but as long as you use the open-source version, it's just like any other app.
When having such issues it really help to use the search functionality at the top right. When putting
Could not parse a response for config:list into that search you will stumble over the following thread where it looks like this is just a bug in that updater: