matlab function in simulink

here is code for the machine learning function

function y = predictActivity(u)%#codegen
persistent n;
if isempty(n)
    n = loadLearnerForCoder('EnsembleModel.mat'); 
end
y = predict(n,u);
end

whenever i use it on command line it works fine

i make its block in simulink like this

but when run its block in simulink i get many errors like this

plz someone help me in this i have been stuck on this for quite a while

thnx in advance

[Amish]

Can you share the error message that you are seeing?