Error message during simulation

Hi everyone,
When I run the simulation I get this message “One or more error occurred” or " the temperature, the humidity or the co2 field has become unstable"
knowing that the dimension of study area is about (400m 400m 18m), the grid number is about (500 500 25), the grid size is (111). And I modeled the study area on Sketchup then I used a plugin to open it on Envimet.
I really need help, thank you in advance.