Computation not completed

Hello,

I'm trying to obtain results for  4*4 MIMO for an urban scenario. I get the propagation results just for 2 antennas. It does not compute for the 3rd antenna.

I've even tried with 2*2 MIMO. There, it computes just for 1st antenna and not the second antenna. 

I'm using the version 2019.2.1-36905.

Can you help me to fix this?