When i export the game, there is anyimg file in the foler

I made the game, and it worked well before,
But few days ago, when i export the game and enter the folder, there isn’t any of img file. only js, index.html. and some other file… there is no asset. Do you know what’s the problem? how can i fix this?

Hmm, is the game working, because the program might have compressed the assets