This question already has an answer here:
So my follower, Stenvar, in Skyrim got lost and I can't find him anywhere.
I have tried to use a console command to get to him. What I did was pressing
` key to open up the console and all that I achieved was
some stuff like
Compiled script not saved! or
item 000b998c not found for parameter ObjectReferenceID.
Here is what I'm typing:
prid 000b988c moveto player