what is the reason of error in Algorithm Genetic Toolbox when we want optimize multi-objective function?What changes should be made to the option?

function f=entropy3(x)
f(1)=((1)/((4)*(0.01783*(x(1)^0.82)*(x(2)^0.46)*((1+x(3))^2.212))*(1+x(4))^0.0152)*(x(5)^(-0.12)))+(((2)*((0.2902*x(1)^(-0.2409))*((1+x(3))^1.95)*((1+x(4))^0.0039*((x(5)^(-0.081))))*(x(1)^5))/((10^12)^2)));
f(2)=1/(((1+x(4))^0.0152))/(((1+x(4))^0.0039)^(1/3));
end

[Walter Roberson]

entropy3.m does not appear to be on your MATLAB path.