I deleted cache from here because I was unable to (re)install openproject:
/var/cache/univention-appcenter/appcenter.software-univention.de/4.4/
since then I get “Unable to find app openproject. Maybe “/usr/bin/univention-app update” to get the latest list of applications?” when I try to install it.
it’s also gone when I look through web.
I already tried to fix it using:
/usr/bin/univention-app update
ucr search --brief repository/online/component
univention-install univention-management-console-module-appcenter
univention-install univention-management-console-module-apps