Hello everyone, I am new to ANSYS and would like your help.

I am performing a transient analysis on a model but I am getting an error as shown below.

 

The model is designed as:

A 2d rectangle is created using solid185 element and this element is extruded using fluid136 element. I want to perform a transient analysis on it. When I try to solve it I am getting this error. I have attached the macro file below in text format.