Texture media dissapear when the game is packaged

Hi, I don’t know what happened, in my game I have a lot of videos as a texture media for the walls.

Then I package, open the .exe and I see this

The media texture has dissapeared. Well, I’m not sure because it’s so dark that I can’t even check the ptesence of the videos.

Edit: I have found the solution and it’s in this video.