Jammming project why there in not recognize map methode why

why it doesn’t work

Hi,
you may find the answer to your problem in this post:
https://discuss.codecademy.com/t/jammming-cannot-read-property-map-of-undefined/606284/9?u=mirja_t
Tracklist is rendered twice. The most common cause of your problem is that one of the rendered components doesn’t receive the props at all.