How can I remove the error " Not enough input arguments" related to bootci function?

Hi everybody. I will be thankful if some one help me. this is my code:

t=0:0.1:pi;
y=sin(t);
k=1;
a=[1 2 3 4];
b=[5 6 7 8];
c=[9 10 11 12];
d=[13 14 15 16];
for i=1:length(t)
    B = [-.161 0 1 0]; 
    beta0(i,:)=[a(i) b(i) c(i) d(i)];
    s_i{i}=@(x) a(i)*(x-t(i)).^3+b(i)*(x-t(i)).^2+c(i)*(x-t(i))+d(i);
    modelfunc(i)=s_i{i};
    beta(i) = @(predictor,response)nlinfit(predictor,response,modelfunc(i),beta0(i,:))  
    c(:,k) = bootci(1000,{beta(i),t',y},'Type','norm');
    k=k+2;
end