To fix this one may need to, first rollback to another version, then reinstall or helm upgrade again.

Start by listing the different releases:

helm history <release> --namespace <namespace>

This provides with information mostly like the original installation was never completed successfully and is pending state something like STATUS: pending-upgrade state.

To escape from this state, use the rollback command:

helm rollback <release> <revision> --namespace <namespace>

Note: revision is optional, but you should try to provide it.

You may then try to issue your original command again to upgrade or reinstall.