SOLID WORKS 2020 MASS PROPERTIES

Hello , I am Trying to use Mass Properties on the Model which i have Developed .

But it is not showing the Mass of the Solid body.

1. I have used Pa6 + 30% GF Material , still couldn't able to find out the Mass.

I believe there is a Surface Crack , Can anyone Guide me How to solve it.

I have attached the file .

SolidworksModeling And Assemblies