pink and black checkerboard


I started a new project from the segmentation template in Lens Studio.
I changed the image and uncheck the Tiled option
but when I do the publish lens option and check it in Snap Camera the background appears pink and black checkerboard
I do it with a new project without any change and have the same result, I hope that the base template works fine, but the behavior is the same pink and black checkerboard.
Any ideas, plz
here is the lens