one way anova test

I have to perform anova test on data (X) of dimension 110093x6 of 5 Groups, so GROUP is of

dimension 110093x1. I used the command [p, table,stats]=anova1(X,GROUP);

While running getting as shown below

*Index exceeds matrix dimensions.

Error in anova1 (line 106)

group = group(nonan,:);

Error in anoatest (line 23)

[p, table,stats]=anova1(X,GROUP);*