Not enough input arguments for my ode15s solver

I got my code following

clear
load("BurgersMatrices_2022.mat");
T = 3; nt = 600; tspan = linspace(0,T,nt);
options = odeset('Mass',E);

x0 = [0; x0b ; 0];
[tout,xout] = ode45(@(t,x) prime,tspan,x0,options);

function out = prime(t,x)
    load("BurgersMatrices_2022.mat");
    J = nonzeros(A); A1 =J(1) ; A2 = J(2);
    J = nonzeros(H); H2 = J(2); H3 = J(1);
    for j = 2:1025
        one(j) = A1*x(j) + A2*(x(j-1)+x(j+1));
        two(j) = H2*(x(j+1))^2 + H3*(x(j-1))^2;
        out(j) = one(j)-0.5*two(j);
    end
    out(1026) = 0;
    out = out';
end

where my x0b is a 1024*1 vector and x0 vector is 1026*1. E is a mass matrix for E (dx/dt) = f(x). I got the error "Not enough input arguments." saying

Error in HW1_P1>prime (line 16)

one(j) = A1*x(j) + A2*(x(j-1)+x(j+1));

Error in HW1_P1>@(t,x)prime (line 9)

[tout,xout] = ode45(@(t,x) prime,tspan,x0,options);

Error in odearguments (line 92)

f0 = ode(t0,y0,args{:}); % ODE15I sets args{1} to yp0.

Error in ode45 (line 107)

odearguments(odeIsFuncHandle,odeTreatAsMFile, solver_name, ode, tspan, y0, options, varargin);

Error in HW1_P1 (line 9)

[tout,xout] = ode45(@(t,x) prime,tspan,x0,options);

i'm not sure what's wrong with it, could anyone help me with this? Thank you.

[Stephen23]

Duplicate:

https://www.mathworks.com/matlabcentral/answers/1831043-not-enough-input-arguments-for-my-ode15s-solver