Using the mesh component for 2D

I have come to the conclusion that my main problem is that the image is not being rendered.

  1. I created myself a rhombus with vertex coordinates:

0,0,0 | 0.5,1,0 | 0.5,-1,0 | 1,0,0

  1. In the component the rhombus shape displays correctly. I just don’t know why the texture is so dark and not blue.

  1. in the main collection also fine

However, after compilation, I get a black screen. Not even the regular sprite appears.
Attached is my example. Is anyone able to tell me what I am doing wrong ?

mesh_test2.zip (1.9 MB)