Error while precompiling the package

[pjgorski]

I have Julia 1.6.4. I have just downloaded and compiled Graphs.jl (I might still have LightGraphs.jl as well).

I downloaded LightGraphsExtras.jl and during precompilation I get the following error:

WARNING: could not import JuMP.UnsetSolver into Interdiction
ERROR: LoadError: LoadError: LoadError: UndefVarError: Variable not defined
Stacktrace:
  [1] getproperty(x::Module, f::Symbol)
    @ Base ./Base.jl:26
  [2] top-level scope
    @ ~/.julia/packages/LightGraphsExtras/K93qX/src/interdiction/bilevel_adaptive_arc.jl:34
  [3] include(mod::Module, _path::String)
    @ Base ./Base.jl:384
  [4] include(x::String)
    @ LightGraphsExtras.Interdiction ~/.julia/packages/LightGraphsExtras/K93qX/src/interdiction/interdiction.jl:1
  [5] top-level scope
    @ ~/.julia/packages/LightGraphsExtras/K93qX/src/interdiction/interdiction.jl:55
  [6] include(mod::Module, _path::String)
    @ Base ./Base.jl:384
  [7] include(x::String)
    @ LightGraphsExtras ~/.julia/packages/LightGraphsExtras/K93qX/src/LightGraphsExtras.jl:1
  [8] top-level scope
    @ ~/.julia/packages/LightGraphsExtras/K93qX/src/LightGraphsExtras.jl:9
  [9] include
    @ ./Base.jl:384 [inlined]
 [10] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, concrete_deps::Vector{Pair{Base.PkgId, UInt64}}, source::Nothing)
    @ Base ./loading.jl:1235
 [11] top-level scope
    @ none:1
 [12] eval
    @ ./boot.jl:360 [inlined]
 [13] eval(x::Expr)
    @ Base.MainInclude ./client.jl:446
 [14] top-level scope
    @ none:1
in expression starting at /home/pgorski/.julia/packages/LightGraphsExtras/K93qX/src/interdiction/bilevel_adaptive_arc.jl:34
in expression starting at /home/pgorski/.julia/packages/LightGraphsExtras/K93qX/src/interdiction/interdiction.jl:1
in expression starting at /home/pgorski/.julia/packages/LightGraphsExtras/K93qX/src/LightGraphsExtras.jl:1
ERROR: Failed to precompile LightGraphsExtras [89bd72ed-8c37-5969-8989-5c5e0cf73e51] to /home/pgorski/.julia/compiled/v1.6/LightGraphsExtras/jl_tJmU4F.
Stacktrace:
 [1] error(s::String)
   @ Base ./error.jl:33
 [2] compilecache(pkg::Base.PkgId, path::String, internal_stderr::Base.TTY, internal_stdout::Base.TTY, ignore_loaded_modules::Bool)
   @ Base ./loading.jl:1385
 [3] compilecache(pkg::Base.PkgId, path::String)
   @ Base ./loading.jl:1329
 [4] _require(pkg::Base.PkgId)
   @ Base ./loading.jl:1043
 [5] require(uuidkey::Base.PkgId)
   @ Base ./loading.jl:936
 [6] require(into::Module, mod::Symbol)
   @ Base ./loading.jl:923