I did everything they asked and cheched it. It worked perfect. But i am getting an error:
Challenge Not yet complete... here's what's wrong:
4 个回答
When I get the error starting "Whoops..." I usually resolve it by refreshing the page on which the error occurs. Click on the icon on the address bar. If you want to do a more thorough refresh, try to do Shift-Refresh.
Most likely cause is the login session to Trailhead has expired.
