Mindmap with markmap.js

I am getting

Library frontmatter validation error: must have required property ‘name’

error notification when doing install from URI (or the install button) in Library Manager. Library is not copied to Library/Malys.

Github page for MarkmapMindmap.md shows

Error in user YAML: (): did not find expected key while parsing a block mapping at line 1 column 1

Other libraries with this YAML error (like Marpslides) fail the same. Libraries without it install just fine.

This is happening on silverbullet-server-windows-x86_64 binary, 2.3.0.