I missed this weeks episode “accidently”, it looks like it was a filler.
On topic: That was a really good cover, thanks for sharing! 
They didn’t have an episode this past week because of the holidays. But the next one that’s coming… yeah it’s a filler 
Gotta love those.
I bypass all of the fillers, most of the time they’re just back story that I already know but for some reason they keep reiterating.