Lazy loading in 0.4 gives error

[gsalunke]

We have tried to use loading: lazy property for ftd.image but it throws below error:

fastn-Error: path: index.html, PackageError { message: "failed to parse ParseError { message: \"Header type `loading` mutable: `false` argument not found for component `ftd.image`\", doc_id: \"fastn.com/content-library\", line_number: 2322 }" }