I can't test My app

Hi, i have this error, i can’t test My projects, when i put the code on the app test shows this message, how can i repair?

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keep an eye on it

What do you see if you go to http://rendezvous.appinventor.mit.edu/ on your Android device?

Yes all is normal and fune but i can’t test My projects Aldo i can’t access to mit.appinventor.edu