File Bug

Phone - Sony Xperia X Compact

File error
I downloaded a map from https://www.youtube.com/redirect?event=video_description&v=SPaI5BJxs5M&redir_token=qTnpd7_O0VFV1hCtT-7dZkcnS3p8MTUyNTcyODIxNEAxNTI1NjQxODE0&html_redirect=1&q=http%3A%2F%2Ftinyurl.com%2Fj363j5x and I saw the file from the settings but I can't see it from the select world screen