# Why do I keep getting a Method Error for Graphs package every time?
**URL:** https://discourse.julialang.org/t/why-do-i-keep-getting-a-method-error-for-graphs-package-every-time/80004
**Category:** Graphs
**Tags:** lightgraphs, graphs
**Created:** [April 25, 2022, 6:00pm UTC](https://discourse.julialang.org/t/why-do-i-keep-getting-a-method-error-for-graphs-package-every-time/80004 "2022-04-25T18:00:00Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@Temi-Tory](https://discourse.julialang.org/u/Temi-Tory)
#### Post date: [April 25, 2022, 6:00pm UTC](https://discourse.julialang.org/t/why-do-i-keep-getting-a-method-error-for-graphs-package-every-time/80004/1 "2022-04-25T18:00:00Z")
Hello there,
I am having a seemingly recurring issue here.
Lets say I am working on a Julia file with graphs for a while and everything is going well. Then I close that file and don’t use it for ages, and then the next time I come back, I get this error related to the Graphs package. Every single time. I don’t know what is causing this, please help.
It has become very frustrating as my work uses network graphs ALOT.
I suspect it’s something I am doing.
But here is the error message I get:
```julia
MethodError: no method matching layout(::Spring{2, Float64}, ::SimpleDiGraph{Int64})
Closest candidates are:
layout(::NetworkLayout.IterativeLayout, ::AbstractMatrix) at \NetworkLayout.jl:75
layout(::NetworkLayout.AbstractLayout, ::LightGraphs.AbstractGraph)
```
Here is a snippet of my code to better explain
```julia
import Cairo,Fontconfig
using Random, Graphs, GraphMakie, GLMakie, CairoMakie, DataFrames, DelimitedFiles, Distributions, MetaGraphs
using GraphMakie.NetworkLayout
CairoMakie.activate!()
Random.seed!(2409);
system_data = readdlm("PrPm/16 NodeNetwork Adjacency matrix.csv", ',', header= false, Int);
system_matrix = Matrix(DataFrame(system_data, :auto));
system_graph= DiGraph(system_matrix)
Sources=[1,3,13]; link_reliability=0.9; Node_Priors = 1 #no node failure therefore node reliability = 1
f, ax, p = graphplot(system_graph, #layout=SquareGrid(),
arrow_size=[25 for i in 1:ne(system_graph)],
nlabels= repr.(1:nv(system_graph)),
node_color=[if i in Sources "blue" else "pink" end for i in 1:nv(system_graph)], #Use colours to identify sink vs source nodes
node_size=[20 for i in 1:nv(system_graph)])
ax.yreversed = true
hidedecorations!(ax) # hides ticks, grid and lables
hidespines!(ax) # hide the frame
display(f)
```
What I have tried:
1. Running my code line by line to figure out where problem is. I believe the problem line to be: graph plot line here: `f, ax, p = graphplot(system_graph, #layout=SquareGrid(),`
2. Killing and restarting julia REPL
3. Updating Graphs package in package manager
4.Restarting everything
---
### Author:  [@lazarusA](https://discourse.julialang.org/u/lazarusA)
#### Post date: [April 25, 2022, 7:13pm UTC](https://discourse.julialang.org/t/why-do-i-keep-getting-a-method-error-for-graphs-package-every-time/80004/2 "2022-04-25T19:13:06Z")
Most likely is due to incompatible packages. The following works just fine
```nohighlight
using Graphs, GraphMakie, GLMakie
using NetworkLayout
g = wheel_graph(10)
f, ax, p = graphplot(g, edge_width=[3 for i in 1:ne(g)],
node_size=[10 for i in 1:nv(g)])
```
with the following versions:
```julia
Status `~/Documents/FunArt/graphsmakie/Project.toml`
[e9467ef8] GLMakie v0.5.5
[1ecd5474] GraphMakie v0.3.4
[86223c79] Graphs v1.6.0
[46757867] NetworkLayout v0.4.4
```
---
### Author:  [@Temi-Tory](https://discourse.julialang.org/u/Temi-Tory)
#### Post date: [April 25, 2022, 7:32pm UTC](https://discourse.julialang.org/t/why-do-i-keep-getting-a-method-error-for-graphs-package-every-time/80004/3 "2022-04-25T19:32:10Z")
> [@lazarusA](#):
>
> ```julia
> using Graphs, GraphMakie, GLMakie
> using NetworkLayout
> g = wheel_graph(10)
> f, ax, p = graphplot(g, edge_width=[3 for i in 1:ne(g)],
> node_size=[10 for i in 1:nv(g)])
>
> ```
Copying and pasting the above on my side gives me the same code. I went back to my julia package manager to check my package versions to compare to yours. My versions are:
GLMakie v0.4.5
GraphMakie v0.2.3
Graphs v1.6.0
NetworkLayout v0.4.0
I wonder if the version mismatch is the cause,.
The problem now is that when I call update to all three non-up-to-date packages in julia, its says no changes and doesn’t seem to find a new version for non of them.
---
### Author:  [@cormullion](https://discourse.julialang.org/u/cormullion)
#### Post date: [April 25, 2022, 7:51pm UTC](https://discourse.julialang.org/t/why-do-i-keep-getting-a-method-error-for-graphs-package-every-time/80004/4 "2022-04-25T19:51:18Z")
Your version of NetworkLayout is looking for LightGraphs - later versions look for Graphs…
---
### Author:  [@Temi-Tory](https://discourse.julialang.org/u/Temi-Tory)
#### Post date: [April 25, 2022, 8:22pm UTC](https://discourse.julialang.org/t/why-do-i-keep-getting-a-method-error-for-graphs-package-every-time/80004/5 "2022-04-25T20:22:19Z")
Thank you,
Forcing an update by: `NetworkLayout@0.4.0 ` threw an error about AbstractPlotting package was preventing the update. By removing AbstractPlotting package, I was able to update and now my code is working as normal thank you very much.
For future reference, may I ask how you were able to deduce that the package version was the issue or was it by process of elimination?
Thank you again 🙂
---
### Author:  [@cormullion](https://discourse.julialang.org/u/cormullion)
#### Post date: [April 25, 2022, 8:23pm UTC](https://discourse.julialang.org/t/why-do-i-keep-getting-a-method-error-for-graphs-package-every-time/80004/6 "2022-04-25T20:23:17Z")
😀 Your first error message mentions LightGraphs …
---
### Author:  [@Temi-Tory](https://discourse.julialang.org/u/Temi-Tory)
#### Post date: [April 25, 2022, 8:28pm UTC](https://discourse.julialang.org/t/why-do-i-keep-getting-a-method-error-for-graphs-package-every-time/80004/7 "2022-04-25T20:28:23Z")
Ohhh yes, that makes sense.
This also gives me a much clearer understanding of these kinds of errors in the future.
Thanks again for taking time to help 👍🏼