Facebook App demo ads(playable ads) doesn't work

I created a simple game with Phaser 3, which is for a Facebook app demo(playable ads).
I uploaded but the game does not run properly.
I think it’s an xhr problem.
Will replacing all asset images with base64 solve it?
I need your advice.

Below are the detailed specifications of Facebook.
Specifications for Playable Ads Assets

Any news? Because I have the same problem.