Hey,
I’ve installed Nextcloud by switch from OC. After the Update-Process I can’t activate the apps.
When I click on “Apps” I see Files and Activities and three spinning Circles. The same when clicking the add-button. Only two spinning circles and no apps.
Wat are the to/from versions you are upgrading to?
When you do an upgrade from OC9.1 to NC10, this happens.
Here in the forums there is more info on how to do the upgrade from OC9.1. In an nutshell it comprises by downgrading the OC config.php to version 9.0, then migrate to NC 9.0 and then do the upgrade to NC 10.
Be aware that some plugins fail on NC9, because they are made for OC9.1/NC10. After the upgrade to NC10, all plugins will be fine again.
I had the same issue with spinning circles. I spent an entire day searching for a solution. The issue occured after upgrading to version 11.0. It persisted after a new installation of 11.0.1. Restarting apache2 did not work. However, a complete server reboot solved the issue for me. Maybe some other services/processes caused the issue.
System is Ubuntu 16.04, apache2 2.4.18, mysql 5.7.16, php 7.0.8