Been trying to get by test instance up and running. As well as Owncloud it also has Zabbix (monitoring software). I got owncloud setup but when I tried to install zabbix it somehow broke the web back-end (the sync client works fine.
When I go to status.php I get:
ownCloud
Access denied
ownCloud – web services under your control
Not sure where to look as the logfile seems to be accessible via the web interface;(.
Server configuration (added to post as i forgot this)
Operating system: Ubuntu 15.10 / Web server: apachie2 2.4.12
Database: MariaDB 10.0.25 / PHP version: 5.6.11
ownCloud version: 9.1.0 (clean install)
Normally you can find your log file in the data folder of your owncloud installation (for example /var/www/owncloud/data on a standard linux ubuntu installation).
Some more informations like Operating System, web server software etc might be helpfull
I suspect that the zabbix and owncloud settings of apache overlap. Does zabbix have a web-interface? Did you restrict the configuration to a subdomain or a sub-folder of zabbix?
example: if you add a <Directory /var/www> ... </Directory> at the wrong place with the wrong content, you can also alter the settings of owncloud that it will stop working.