Cannot edit app details. "Sorry, your message couldn’t be submitted because we’re having trouble communicating with our servers.... "

I cannot edit an app's details.  

I get the message 

Sorry, your message couldn’t be submitted because we’re having trouble communicating with our servers... 

It is not a communication problem.  I can edit the details of other apps.  Even if I make no changes and press submit the error appears.

Anyone have any hints?