FODESystem not defiend

[Velmurugan1008]

When I running to the following code, I got an error "UndefVarError: FODESystem not defined"

import Pkg
Pkg.add("FractionalDiffEq")
using FractionalDiffEq, Plots
α = [0.9; 0.9; 0.9];
alpha = [0.9, 0.8, 1]
u0 = [1-0.001; 0.001; 0];
tspan = (0, 100);
h = 0.01;
function SIR!(du, u, p, t)
β, γ = 0.4, 0.04
du[1] = -βu[1]u[2]
du[2] = βu[1]u[2]-γu[2]
du[3] = γu[2]
end

prob = FODESystem(SIR!, alpha, u0, tspan)
sol1 = solve(prob, h, FLMMBDF())
sol2 = solve(prob, h, FLMMNewtonGregory())
sol3 = solve(prob, h, FLMMTrap())
sol4 = solve(prob, h, PECE())
sol5 = solve(prob, h, PIEX())
sol6 = solve(prob, h, NonLinearAlg())
sol7 = solve(prob, h, GL())

Updating registry at C:\Users\gvmur\.julia\registries\General.toml
Resolving package versions...
No Changes to C:\Users\gvmur\.julia\environments\v1.8\Project.toml
No Changes to C:\Users\gvmur\.julia\environments\v1.8\Manifest.toml
UndefVarError: FODESystem not defined

Stacktrace:
[1] top-level scope
@ In[2]:16

[ErikQQY]

Hi there! I test the SIR example, and it worked fine, here are some suggestions:

1. Use the latest version of FractionalDiffEq@v0.2.11
2. Change the function definition to this:

function SIR!(du, u, p, t)
β, γ = 0.4, 0.04
du[1] = -β*u[1]*u[2]
du[2] = β*u[1]*u[2]-γ*u[2]
du[3] = γ*u[2]
end