Grafana 7.3.1/2 Issue during updating, de/installing because of an image problem

Hello community,
i was using Grafana add-on several month without issues. At least last three days Gradana (7.3.1) can´t run anymore and also be updated to newest 7.3.2.
I thought, reinstalling will help and finally after some troubles i was able to deinstall Grafana, but can´t install it. During updating, deinstalling and now installing, I got same error message:

Can’t install ghcr.io/hassio-addons/grafana/armv7:7.3.2: 404 Client Error for http+docker://localhost/v1.41/images/ghcr.io/hassio-addons/grafana/armv7:7.3.2/json: Not Found (“no such image: ghcr.io/hassio-addons/grafana/armv7:7.3.2: No such image: ghcr.io/hassio-addons/grafana/armv7:7.3.2”)

Does anybody know such error message and how it can be solved?

thanks in advance!