It looks like there was a network issue connecting to the Dropbox API. Are you still getting the error? If so, there's likely a problem with the network connection on that machine preventing you from connecting to api.dropbox.com. Do you know if there's any security software, firewall, etc. that may be doing so? You can try connecting directly to api.dropbox.com to see where the problem might be, e.g., via:
$ curl api.dropbox.com
We love to learn from the educators who use Dropbox. Whether you teach kids, teens, adults or a combination of all three, we want to know what apps and integrations you use with Dropbox to help with teaching. Which of the ones below is your favorite, or most used tool?