i Have google kubernetes engine in v1.22, so try to install kasten 5.5.9. When deploy kasten in google kubernetes engine, have the error:
firstname.lastname@example.org/tools/cache/reflector.go:169: Failed to watch *v1.ClusterIssuer: failed to list *v1.ClusterIssuer: request to convert CR from an invalid group/version: cert-manager.io/v1alpha2
If i try to install the last kasten version, everything was fine, but the jobs fails because use a unsupported kubernetes version.
You will probably have to upgrade your CRs and CRDs with newer version of API as stated in the above documentation.