Wind Tunnel Grading Error

I got [1. Solution exception:Invalid input: 1.44] error when I change wind direction to around (1,1,0) or (-1,-1,0). I tried to reduce the cell size but the error still there.
Please help.

Hi, Do you use Butterfly_WindTunnelGrading??? Sometimes it didn’t work well and you should set it up by hand.
Plz send you Algorithm img if you want