[@portabletext/react] Unknown block type "iframe", specify a component for it in the `components.types` prop

Subscribe to Road to Consensus here:

https://art19.com/shows/road-to-consensus-by-coindesk

We've launched a new podcast featuring interviews with leaders of the blockchain industry. If you like this first episode, please subscribe at the link above! And if you want more info about Consensus in New York on May 13, visit Consensus2019.com

Announcing: The Road to Consensus! (link in shownotes)