Error in FindMinimum for defined function of NIntegrate

HELLO,
I have a problem in FindMinimum , I defined 3 functions, Friedman function, the distance and chi square function , I imported the Data, But findMinimum of chi square is not working

gold.txt (3.11 KB)

Your syntax for FindMinimum is wrong. If you want to minimize over multiple variable they all need to wrapped in a list. Try

fminL=FindMinimum[chi[\[CapitalOmega]m,\[Omega]d,h],{{\[CapitalOmega]m,0.32,0.321},{\[Omega]d,-1.1,-0.99},{h,0.7,0.71}}]//AbsoluteTiming