how can I remove this error?

on running this

[t0,y]= ode23('inverted',[0 3],[0.01 0 0 ])
subplot(2,1,1),plot(t0,y(:,1)) % for e
ylabel ('Angular position (rad)')
subplot(2,1,2),plot(t0,y(:,3)) % for u
ylabel ('Input force (N)')

I'm getting the following error

Error using fuzzy.internal.utility.validateFIS (line 129)
Expected parameter(s) of MF 1 of input 1 to be finite.

Error in fuzzy.internal.utility.validateInputsAndInitializeData (line 21)
fuzzy.internal.utility.validateFIS(fis);

Error in evalfis (line 91)
    fish = fuzzy.internal.utility.validateInputsAndInitializeData(...

Error in inverted (line 51)
U=evalfis(inp,a)*h;

Error in odearguments (line 90)
f0 = feval(ode,t0,y0,args{:});   % ODE15I sets args{1} to yp0.

Error in ode23 (line 114)
    odearguments(FcnHandlesUsed, solver_name, ode, tspan, y0, options, varargin);

Error in Fuzzyassignment1 (line 1)
[t0,y]= ode23('inverted',[0 3],[0.01 0 0])