Hello, Everyone Im running this example from Agents.jl page – example. I’m getting Error as shown below. It will be really helpful if someone can help me out here as its extracted directly from website. I will expect it to run without error. Did I miss something ?
Thank you 
using Agents
using Distributions
using CairoMakie
using DifferentialEquations
using Random
mutable struct Fisher <: AbstractAgent
id::Int
competence::Int
yearly_catch::Float64
end
function agent_diffeq_step!(agent, model)
agent.yearly_catch = rand(model.rng, Poisson(agent.competence))
end
function model_diffeq_step!(model)
# We step 364 days with this call.
OrdinaryDiffEq.step!(model.i, 364.0, true)
# Only allow fishing if stocks are high enough
model.i.p[2] =
model.i.u[1] > model.min_threshold ? sum(a.yearly_catch for a in allagents(model)) :
0.0
# Notify the integrator that conditions may be altered
OrdinaryDiffEq.u_modified!(model.i, true)
# Then apply our catch modifier
OrdinaryDiffEq.step!(model.i, 1.0, true)
# Store yearly stock in the model for plotting
model.stock = model.i.u[1]
# And reset for the next year
model.i.p[2] = 0.0
OrdinaryDiffEq.u_modified!(model.i, true)
end
function initialise_diffeq(;
stock = 400.0, # Initial population of fish (lets move to an equilibrium position)
max_population = 500.0, # Maximum value of fish stock
min_threshold = 60.0, # Regulate fishing if population drops below this value
nagents = 50,
)
function fish_stock!(ds, s, p, t)
max_population, h = p
ds[1] = s[1] * (1 - (s[1] / max_population)) - h
end
prob = OrdinaryDiffEq.ODEProblem(fish_stock!, [stock], (0.0, Inf), [max_population, 0.0])
integrator = OrdinaryDiffEq.init(prob, OrdinaryDiffEq.Tsit5(); advance_to_tstop = true)
model = ABM(
Fisher;
properties = Dict(
:stock => stock,
:max_population => max_population,
:min_threshold => min_threshold,
:rng => MersenneTwister(1234),
:i => integrator, # The OrdinaryDiffEq integrator
),
)
for _ in 1:nagents
add_agent!(model, floor(rand(model.rng, truncated(LogNormal(), 1, 6))), 0.0)
end
model
end
modeldeq = initialise_diffeq()
_, resultsdeq = run!(modeldeq, agent_diffeq_step!, model_diffeq_step!, 20; mdata = [:stock])
Error:
ERROR: MethodError: no method matching should_we_collect(::Int64, ::StandardABM{…}, ::Bool)
Closest candidates are:
should_we_collect(::Any, ::Any, ::Any, ::Function)
@ Agents ~/.julia/packages/Agents/8JW8b/src/simulations/collect.jl:197
should_we_collect(::Any, ::Any, ::Any, ::AbstractVector)
@ Agents ~/.julia/packages/Agents/8JW8b/src/simulations/collect.jl:196
should_we_collect(::Any, ::Any, ::Any, ::Real)
@ Agents ~/.julia/packages/Agents/8JW8b/src/simulations/collect.jl:195
Stacktrace:
[1] run!(model::StandardABM{…}, agent_step!::typeof(agent_diffeq_step!), model_step!::typeof(model_diffeq_step!), n::Int64; when::Bool, when_model::Bool, mdata::Vector{…}, adata::Nothing, obtainer::Function, agents_first::Bool, showprogress::Bool, warn_deprecation::Bool)
@ Agents ~/.julia/packages/Agents/8JW8b/src/deprecations.jl:0
[2] top-level scope
@ Untitled-2:72
Some type information was truncated. Use `show(err)` to see complete types.
