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.