External Vault Agent + Bitnami Helm Chart: Replica failure

Hello,
I have a problem: I try to use an external vault with my K8 cluster.
I followed this tutorial, installing first the agent via the helmchart (as a subchart of a chart which setups the necessary service account) and then installing my deployments via a custom chart.
It works perfectly with self-made deployments, but when I try to add an official Bitnami chart (tested with the nginx and tomcat chart) to my chart as a subchart, those deployments won’t start with a replica failure:

Error creating: admission webhook "vault.hashicorp.com" denied the request: error creating new agent sidecar: failed to find service account volume mount

I already tried to fix it by setting

    vault.hashicorp.com/agent-init-first: 'true'

And now I am at my wits’ end.

Thanks in advance for any answers

What does your chart look like? My guess is that vault.hashicorp.com is/was some placeholder value?

Hallo,
I have finally found the solution for the problem, and I want to document it here, so anyone in the future having the same problem maybe find it.
In the Bitnami charts it is essential to set in values.yaml

automountServiceAccountToken: true

The bitnami charts I used had this value defaulted to false, which lead to:

Error creating: admission webhook "vault.hashicorp.com" denied the request: error creating new agent sidecar: failed to find service account volume mount