Failed to create manifest.yml with 'spec' command

I started getting an error recently when trying to use ‘spec’ command and I don’t understand why. Previous versions of the same plugin worked fine.

Inspecting content: Robot.gha
WARNING: Inspection failed for some unknown reason

---
name: <name>
version: <version>
authors:
- <author>
description: <description>
url: <url>

Sorry for missing this one – I fixed a similar bug a few weeks ago, so hopefully this is also resolved! Please install the latest Rhino WIP and try "C:\Program Files\Rhino 7 WIP\System\yak.exe" spec again.

Works perfectly!
Thank you