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Rafael Fahur2,233 Points
Communication problem !
Can't complete the challeging, keep appears a dialog box with this message. I tried to close and open browser, refresh, etc...
Tommy Gebru30,148 Points
Turns out I have experienced this problem as well under different lessons, it is best to work on something else (skip to the next lesson) and return to it 5 minutes later and it goes away. Preferably stay on the site and check out everything Treehouse offers.
Happy coding ;)