Repair Nextcloud Update

** About the current system ** A friend installed nextcloud about 2 years ago. I could click on "update" most times, just 2 times he needed to update manually in last year. Now I have error that update will not proceed because its locked at one step. "Step 3 is currently in process. Please reload this page later." I understand some basic linux commands like sudo su and stuff. But I killed one time the permission system and now I need to say, I dont understand permission. ** The task ** Can you update my NextCloud version? And fix the imageick warning? If possible, what will it cost to let you check the system? Kind regards ** Current state ** Warning: There are some warnings regarding your setup. This instance is missing some recommended PHP modules. For improved performance and better compatibility it is highly recommended to install them. **imagick** Current version: 21.0.2 RC1 A new version is available: Nextcloud 21.0.7