Unsealing using Azure Key Vault

Hi, We have been trying to get a new installation of the Vault (single node) unsealed by using Azure Key Vault without much luck. The steps followed are largely based on the directions available in this tutorial - Auto-unseal using Azure Key Vault | Vault | HashiCorp Developer

The error message is this:
2023-05-11T19:55:21.017Z [INFO] core: stored unseal keys supported, attempting fetch
2023-05-11T19:55:21.020Z [WARN] failed to unseal core: error=“stored unseal keys are supported, but none were found”

The service principal that is used to access Key Vault has been assigned all the permissions.

Thomas

Sounds like this Vault has never been initialized to me?

It is not. Does it have to initialized before it would be unsealed automatically?