Error : Invalid Variance value in ( Normal_Variance (HstDist_Normal_Var) ). Variance should be a non-negative number greater than zero.
38 Message: Imported variables from model(s) Number of design variables ( 4 )导入模板提示错误如上所示,检查了四个变量没有出现负数啊,请问大神们指教问题出在哪?