Why does It appear as an error to upload file (702) and the error 1109?

MIT App Inventor Help
1

Screenshot_20250411_034405~2
Screenshot_20250411_034405~2858×980 109 KB

Screenshot_20250411_034423~2
Screenshot_20250411_034423~2661×936 110 KB

2

nombres and canciones are lists

Screenshot_20250411_070441_DuckDuckGo
Screenshot_20250411_070441_DuckDuckGo1080×886 136 KB

You are trying to set the source of the Player to a list, which will not work, it should be an item from that list
Same in procedure seguir

Please switch the language to English before posting a screenshot next time

Taifun