How to use feature selection in an external .mat file

Hi,

I am trying to use feature selection to determine the importance of the variables A1....A9 in relation to the variable A10. Each of these variables is on the Columns of the S2_T1.mat matrix. I have written a code, but the scores returned are [Inf,Inf,Inf,Inf,Inf,Inf,Inf,Inf,Inf]. Can someone help me spot the possible cause(s) of the flaws in the code?

load S2_T1.mat
varnames={'A1';'A2';'A3';'A4';'A5';'A6';'A7';'A8';'A9';'A10'};
S2_T1.Properties.VariableNames = varnames;
[idx,scores] = fsrftest(S2_T1,'A10');
find(isinf(scores))
bar(scores(idx))
xlabel('Predictor rank')
ylabel('Relative Importance Score')

I thank you in advance

Best regards,