cluster-api-provider-proxmox chart installation error in CI

I've added Artifact Hub linting to all the charts, and they linted successfully. However, one chart throws an error while installing, as shown in the attached screenshot. Could you please check and fix the issue?"
<img width="1417" height="193" alt="Image" src="https://github.com/user-attachments/assets/ebfa9c2e-26ff-428f-bdd8-66816227f75f" />