I’m getting this error. I’ve tried on some devices and using different networks.
Just tested, voice.mozilla.org loads properly here (Orange FTTH, France).
Hm, listen page behaves erratically.
Devtools shows https://voice.mozilla.org/api/v1/fr/clips?count=10 returns 504
Experienced the same. There was a huge spike of visitors in the last hours. Guess that is what caused it.
EDIT: looks like a lot of the visitors are contributing to the new polish dataset. 
              
              
              3 Likes
            
            
          Ok, now it works again for me (Italy)


