This error exists in the last build. How it can be fixed?
https://github.com/grafana/grafana/issues/8789
we are going to release 4.4.2 patch release with this fix soon.
You can try a nightly build as well:
And I can then update from 5 to version 4.4.2?
The nightly build is 5.0.0-pre1 (and not 5.0.0) so if this is urgent you can switch to the nightly build until 4.4.2 is released and then upgrade to 4.4.2 or wait until 5.0.0 is released in the autumn.