Zero Results in Linear Structural Analysis when apply distributed load - SimSolid 2024

I want to ask a question about the simulation results in SimSolid version 2024. I tried to do a linear structural analysis by applying a distributed load of 800 kg to my model and applied fixed and slider supports at the bottom, but when I got the results, it showed 0 values for all outputs (as if it was not calculated), including displacement and von Mises stress. Is there an issue with the program, or do I need to set up more conditions before running the simulation? Please advise. I have applied steel to all parts and made all the connections already. Kindly see pictures attched for refrence.

Thank you,

Pichaya