[GuzzleHttp\Exception\RequestException] e
e cURL error 60: SSL certificate problem: self signed certificate
Already recreated ssl certificate.
Whats the problem? How to solve it?
Please give a "simple answer" I'm not that common to linux-like os.
Thanks Joe
how are you trying to upgrade? automatically or manually?
Is anyone able to help me?
You might be able to help yourself by doing the manual update/upgrade. The instructions for this are available at https://doc.owncloud.org
Excuse me, but I'm a more than less unexperienced linux user .... I already found that instruction, but the pure description isn't helpful for me as an total beginner. Do anyone know if there is a step by step command based instruction? You know, one for "idiots" 
!?
Hi,
have you access to your ownCloud via Command line? SSH or something?
if yes, try to execute this commands in your ownCloud directory.
You can switch to your ownCloud directory with this command
cd /var/www/owncloud
then execute this commands:
sudo -u www-data php occ maintenance:mode --off
sudo -u www-data php occ upgradeYes, I have ssh access. I will try it and give feedback!
Thanks in advance ...
this is the screencopy:
pi@raspberrypi ~ $ cd /var/www/owncloud
pi@raspberrypi /var/www/owncloud $ sudo -u www-data php occ maintenance:mode --off
Maintenance mode disabled
pi@raspberrypi /var/www/owncloud $ sudo -u www-data php occ upgrade
ownCloud is already latest version
whats wrong, the webinterface tells me that an upgrade is possible ...
You can edit the config.php to a lower number and execute the command again.
I don't think that the occ upgrade will do the same as the update via the Web interface or am i wrong?
You are right, without the tarballs owncloud won't update anything. My bad, did not notice this.