Early in my training and followed the easy steps to mapping the 3 fields as instructed. However when I hit next I get an error. Is there a way to fix this?
I continued on and went back every day or two to see if something in the trailhead would reset or it deleting my cache helped. I started getting weirder errors. At first I got as far as pressing upload and received an error that there was no file to upload. Next I found there were 2 field with the same name to map it to so check. I had to map to the fields towards the end of the list not the top.
Finally I finished the unit and went back yesterday did everything the same and it worked. I'm not sure what I did, I have been on Classic for about 8 years and lightning is formatted more efficiently but different.