Error: This app has no minimum ownCloud version assigned.

[tekniboy1506]

Hi
After I installed "user_cas" to ownCloud, I go to the "Apps" panel in the ownCloud Web Interface, then I saw the "CAS user and group backend" apps at the end of the "Not enabled" page with the yellow warning "This app has no minimum ownCloud version assigned. This will be an error in ownCloud 11 and later." I tried ignoring the warning and enable the app, then it shown an error: "could not disable broken app". Then when I tried to reload my ownCloud page, it got an HTTP Error 500 and said: "my-hostname is currently unable to handle this request".
Could you explain this error and help me resolve it please?
Note:
-System OS: CentOS 7
-ownCloud version: 9.1.1

[felixrupp]

Same here. You need to go to your database and switch off the app. Go to the oc_appconfig table and search for the entry with appid="user_cas" and configkey="enabled". Set the "configvalue" to "no".
After that your OC instance should run fine.

I assume user_cas for 9.1.0 is broken at the moment. I am trying to fix it since a few days.