Unable to deploy a new app to Mendix Cloud

Hi,  I want to push further my evaluation of the mendix platform so I’ve just created a new mendix “blank app” but i’m unable to deploy it to the mendix Cloud (from the web or the desktop modeler). Previous applications I’ve created some months ago, are still working correctly with mendix cloud.  When I go to the “DEPLOY > Environnements” menu, i get the following error with newly created apps Any clues, how I can solve this trouble ?  
1 answers

This afternoon, all went back to normal, I can deploy apps to mendix cloud again.

it’s strange as I didn’t change anything but now I’m back to mendix development test.