ERROR: LoadError: UndefVarError: MathOptInterface not defined

[LD-FW]

Hi,
I am trying to implement the project found at
https://github.com/TILOS-AI-Institute/HypergraphPartitioning/tree/main/SpecPart
, but I am encountering some issues.
When I execute the command julia> include("SpecPart/SpectralRefinement.jl"), I receive the following error:
ERROR: LoadError: UndefVarError: MathOptInterface not defined
Stacktrace:
[1] include(mod::Module, _path::String)
@ Base ./Base.jl:495
[2] include(x::String)
@ Main.SpectralRefinement ~/Documents/HypergraphPartition/SpecPart/SpectralRefinement.jl:1
[3] top-level scope
@ ~/Documents/HypergraphPartition/SpecPart/SpectralRefinement.jl:23
[4] include(fname::String)
@ Base.MainInclude ./client.jl:489
[5] top-level scope
@ REPL[2]:1
in expression starting at /home/fw23/Documents/HypergraphPartition/SpecPart/PartitionILP.jl:3
in expression starting at /home/fw23/Documents/HypergraphPartition/SpecPart/SpectralRefinement.jl:1

I checked the installed packages using Pkg.status(), and I found the package [b8f27783] MathOptInterface v1.31.2 installed.
Additionally, I tried adding using MathOptInterface and import MathOptInterface at the beginning of both PartitionILP.jl and SpectralRefinement.jl, but I still get the same error.
Thanks.

[11234201]

same problem