draft-js already has support for article and section blocks (https://github.com/facebook/draft-js/pull/2212). Due to the lack of support for these blocks from draft-convert, this results in an error:
convertToHTML: missing HTML definition for block with type section.
draft-jsalready has support for article and section blocks (https://github.com/facebook/draft-js/pull/2212). Due to the lack of support for these blocks fromdraft-convert, this results in an error: