Unable to publish to rpubs: "We're sorry, but something went wrong."

I'm trying to publish a plotly presentation to rpubs and it seems to upload ok. However, after completing the description and slug etc. it then takes me to a stark error page saying simply:

We're sorry, but something went wrong.

There is no indication of what went wrong from this end. The presentation works ok locally.

Can anyone help me please?

same with me, mine always working fine but startded error again since yesterday...