My ISP urged the users to upgrade to a newer PHP-version. To get it over with I went into their webinterface and switched to PHP 7. That was last Wednesday. I checked my wordpress blogs, all was fine.
So I thought. I forgot that I have owncloud running for one digital calendar, so all my devices can connect to that one without going to iCloud or something.
I noticed an error in my calendar client on my Macbook. I went to http://[domain]/owncloud/index.php/apps/calendar/ to see if my data was still there and I got some lines of errors about certain files missing: "Warning: require(/domains/ /caldav/owncloud/3rdparty/symfony/polyfill-mbstring/bootstrap.php): failed to open stream: No such file or directory in /domains/ /caldav/owncloud/3rdparty/composer/autoload_real.php on line 50"
"Whatever, let's upgrade" I thought. From 188.8.131.52 to 9.1. Get the files and throw it around the /config and /data through FTP, easy. Then the error 'PHP zip modules are missing'. Tech support suggested me to switch down to PHP 5.6 and try again. That's what I did.
Then I found out I made too big a jump from one version to the latest. "Updates between multiple major versions and downgrades are unsupported." So I replaced all the files (except /config and /data again) to something as close to 184.108.40.206 I could find on https://owncloud.org/changelog/, version 8.2.5.
Now I am staring at a blank web page where the updater dialogue should appear at [domain]/owncloud/
I need some inspiration, what could/should I do next? Perhaps find shell access through the terminal and google-up some commands? Not that familiar there, but it has usually been the way out. Thank you!
Operating system: Server Version: Apache/2.2.22 (Debian) DAV/2 SVN/1.6.17
PHP version: 5.6
ownCloud log (data/owncloud.log)
Nothing in the log-file I did not mention yet. Last line in it says: "Updates between multiple major versions and downgrades are unsupported." Nothing after that.