# Error from example '33D Mixed-Agent Ecosystem with Pathfinding'

**URL:** https://discourse.julialang.org/t/error-from-example-33d-mixed-agent-ecosystem-with-pathfinding/109868
**Category:** Modelling & Simulations
**Created:** [February 7, 2024, 1:13pm UTC](https://discourse.julialang.org/t/error-from-example-33d-mixed-agent-ecosystem-with-pathfinding/109868 "2024-02-07T13:13:27Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![nadeen1507](https://avatars.discourse-cdn.com/v4/letter/n/958977/32.png) [@nadeen1507](https://discourse.julialang.org/u/nadeen1507)
#### Post date: [February 7, 2024, 1:13pm UTC](https://discourse.julialang.org/t/error-from-example-33d-mixed-agent-ecosystem-with-pathfinding/109868/1 "2024-02-07T13:13:27Z")

</div>

I have copied an example form the ‘Julia Library’ line by line and I am constantly receiving this error when running the last visualization step. Please tell me how to fix it.

ERROR: MethodError: no method matching abmvideo(::String, ::StandardABM{ContinuousSpace{3, false, Float64, typeof(Agents.no\_vel\_update)}, Animal, typeof(Agents.Schedulers.fastest), NamedTuple{(:landfinder, :airfinder, :Δe\_grass, :Δe\_rabbit, :rabbit\_repr, :fox\_repr, :hawk\_repr, :rabbit\_vision, :fox\_vision, :hawk\_vision, :rabbit\_speed, :fox\_speed, :hawk\_speed, :heightmap, :grass, :regrowth\_chance, :water\_level, :grass\_level, :dt), Tuple{AStar{3, false, true, Float64, DirectDistance{3}}, AStar{3, false, true, Float64, MaxDistance{3}}, Int64, Int64, Float64, Float64, Float64, Int64, Int64, Int64, Float64, Float64, Float64, Matrix{Int64}, BitMatrix, Float64, Int64, Int64, Float64}}, MersenneTwister}, ::typeof(animal\_step!), ::typeof(model\_step!); figure::NamedTuple{(:resolution,), Tuple{Tuple{Int64, Int64}}}, frames::Int64, framerate::Int64, ac::typeof(animalcolor), as::Float64, static\_preplot!::typeof(static\_preplot!), title::String)  
Stacktrace:  
[1] top-level scope  
@ c:\Users\nadee\OneDrive\tamuq-chen-secarelab-evac\3D example.jl:331