When I use dde_biftool, it said "error br = br_stabl(funcs,br,0,1);" how to deal with it.

When I use dde_biftool, it said "error br = br_stabl(funcs,br,0,1);" how to deal with it. The following is my code. Thank you very much

pp_sys=@(x,p)[...
    p(1)-p(2)*exp(-p(3)*x(2,2)).*x(1,1).*x(2,1)-p(4)*x(1,1);....
    p(2)*exp(-p(3)*x(2,2)).*x(1,1).*x(2,1)-(p(4)+p(5))*x(2,1)];
    funcs=set_funcs('sys_rhs',pp_sys,'sys_tau',@()[15]); 
    parbd = {'min_bound',[6,5],'max_bound',[6,13],'max_step',[6,0.05]};
[br,success] = SetupStst(funcs,...
'parameter',[0.2 1 3 0.2 0.1  0.00],... 
'x',[0.6294600462; 0.2470266359],'contpar',6,'step',0.02, parbd{:})

figure(1); clf; 
br.method.continuation.plot = 1; 
 [br,s,f,r] = br_contn(funcs,br,30); 
 
% ylim([0,1]); set(gca,'FontSize',20);
figure(2); clf;
br = br_stabl(funcs,br,0,1);
[xm,ym] = df_measr(0,br);
br_splot(br,xm,ym);
ylim([0,1]); set(gca,'FontSize',20);

[Rik]

Did you read the documentation for that function on Github? Or are you using another function?

And what is the full error message (all red text)?