# Julia: \[ Info: Precompiling DifferentialEquations \[0c46a032-eb83-5123-abaf-570d42b7fbaa\] ERROR: LoadError: UndefVarError: undefmatrix not defined

**URL:** <https://discourse.julialang.org/t/julia-info-precompiling-differentialequations-0c46a032-eb83-5123-abaf-570d42b7fbaa-error-loaderror-undefvarerror-undefmatrix-not-defined/94112>\
**Category:** New to Julia\
**Tags:** package\
**Created:** [February 6, 2023, 12:13am UTC](https://discourse.julialang.org/t/julia-info-precompiling-differentialequations-0c46a032-eb83-5123-abaf-570d42b7fbaa-error-loaderror-undefvarerror-undefmatrix-not-defined/94112 "2023-02-06T00:13:15Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![qjulia](https://avatars.discourse-cdn.com/v4/letter/q/dfb087/32.png) [@qjulia](https://discourse.julialang.org/u/qjulia)\
**Post date:** [February 6, 2023, 12:13am UTC](https://discourse.julialang.org/t/julia-info-precompiling-differentialequations-0c46a032-eb83-5123-abaf-570d42b7fbaa-error-loaderror-undefvarerror-undefmatrix-not-defined/94112/1 "2023-02-06T00:13:15Z")

</div>

Hello,  
I have started to use Julia (very recently)  
At the beginning I was having a precompiled error. Then I have updated julia simply by the following commands:

```julia
]add UpdateJulia
using UpdateJulia
update_julia()

```

And it worked very well and I got the message which says

> 201 dependencies successfully precompiled in 208 seconds

Then I have run my notebook simply by saying:

```julia
add IJulia
using IJulia
notebook()

```

And the first line of my notebook is the following sentence:

```julia
using DifferentialEquations, Flux, DiffEqFlux, Optim, DiffEqSensitivity, Plots, OrdinaryDiffEq, Zygote, StaticArrays, LinearAlgebra, BenchmarkTools, PaddedViews, LaTeXStrings, PGFPlotsX, PlotThemes, ApproxFun

```

And I got the following error:

```julia
[Info: Precompiling DifferentialEquations [0c46a032-eb83-5123-abaf-570d42b7fbaa]
ERROR: LoadError: UndefVarError: undefmatrix not defined
Stacktrace:
 [1] getproperty(x::Module, f::Symbol)
   @ Base ./Base.jl:26
 [2] top-level scope
   @ ~/.julia/packages/ArrayInterfaceStaticArraysCore/3gY0A/src/ArrayInterfaceStaticArraysCore.jl:6
 [3] include
   @ ./Base.jl:384 [inlined]
 [4] 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::String)
   @ Base ./loading.jl:1235
 [5] top-level scope
   @ none:1
 [6] eval
   @ ./boot.jl:360 [inlined]
 [7] eval(x::Expr)
   @ Base.MainInclude ./client.jl:446
 [8] top-level scope
   @ none:1
in expression starting at /home/gozde/.julia/packages/ArrayInterfaceStaticArraysCore/3gY0A/src/ArrayInterfaceStaticArraysCore.jl:1
ERROR: LoadError: Failed to precompile ArrayInterfaceStaticArraysCore [dd5226c6-a4d4-4bc7-8575-46859f9c95b9] to /home/gozde/.julia/compiled/v1.6/ArrayInterfaceStaticArraysCore/jl_J6ceqM.
Stacktrace:
  [1] error(s::String)
    @ Base ./error.jl:33
  [2] compilecache(pkg::Base.PkgId, path::String, internal_stderr::IOContext{Base.PipeEndpoint}, internal_stdout::IOContext{Base.PipeEndpoint}, 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
  [7] include
    @ ./Base.jl:384 [inlined]
  [8] 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::String)
    @ Base ./loading.jl:1235
  [9] top-level scope
    @ none:1
 [10] eval
    @ ./boot.jl:360 [inlined]
 [11] eval(x::Expr)
    @ Base.MainInclude ./client.jl:446
 [12] top-level scope
    @ none:1
in expression starting at /home/gozde/.julia/packages/RecursiveArrayTools/zDUPp/src/RecursiveArrayTools.jl:2
ERROR: LoadError: Failed to precompile RecursiveArrayTools [731186ca-8d62-57ce-b412-fbd966d074cd] to /home/gozde/.julia/compiled/v1.6/RecursiveArrayTools/jl_I7Crf4.
Stacktrace:
  [1] error(s::String)
    @ Base ./error.jl:33
  [2] compilecache(pkg::Base.PkgId, path::String, internal_stderr::IOContext{Base.PipeEndpoint}, internal_stdout::IOContext{Base.PipeEndpoint}, 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
  [7] include
    @ ./Base.jl:384 [inlined]
  [8] 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::String)
    @ Base ./loading.jl:1235
  [9] top-level scope
    @ none:1
 [10] eval
    @ ./boot.jl:360 [inlined]
 [11] eval(x::Expr)
    @ Base.MainInclude ./client.jl:446
 [12] top-level scope
    @ none:1
in expression starting at /home/gozde/.julia/packages/NonlinearSolve/hDIt1/src/NonlinearSolve.jl:1
ERROR: LoadError: Failed to precompile NonlinearSolve [8913a72c-1f9b-4ce2-8d82-65094dcecaec] to /home/gozde/.julia/compiled/v1.6/NonlinearSolve/jl_9DWnEm.
Stacktrace:
  [1] error(s::String)
    @ Base ./error.jl:33
  [2] compilecache(pkg::Base.PkgId, path::String, internal_stderr::IOContext{Base.PipeEndpoint}, internal_stdout::IOContext{Base.PipeEndpoint}, 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
  [7] include
    @ ./Base.jl:384 [inlined]
  [8] 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::String)
    @ Base ./loading.jl:1235
  [9] top-level scope
    @ none:1
 [10] eval
    @ ./boot.jl:360 [inlined]
 [11] eval(x::Expr)
    @ Base.MainInclude ./client.jl:446
 [12] top-level scope
    @ none:1
in expression starting at /home/gozde/.julia/packages/DiffEqBase/ygWoJ/src/DiffEqBase.jl:1
ERROR: LoadError: Failed to precompile DiffEqBase [2b5f629d-d688-5b77-993f-72d75c75574e] to /home/gozde/.julia/compiled/v1.6/DiffEqBase/jl_50poYH.
Stacktrace:
  [1] error(s::String)
    @ Base ./error.jl:33
  [2] compilecache(pkg::Base.PkgId, path::String, internal_stderr::IOContext{Base.PipeEndpoint}, internal_stdout::IOContext{Base.PipeEndpoint}, 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
  [7] include
    @ ./Base.jl:384 [inlined]
  [8] 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
  [9] top-level scope
    @ none:1
 [10] eval
    @ ./boot.jl:360 [inlined]
 [11] eval(x::Expr)
    @ Base.MainInclude ./client.jl:446
 [12] top-level scope
    @ none:1
in expression starting at /home/gozde/.julia/packages/DifferentialEquations/VkYkb/src/DifferentialEquations.jl:1
Failed to precompile DifferentialEquations [0c46a032-eb83-5123-abaf-570d42b7fbaa] to /home/gozde/.julia/compiled/v1.6/DifferentialEquations/jl_QLMPE8.

Stacktrace:
 [1] error(s::String)
   @ Base ./error.jl:33
 [2] compilecache(pkg::Base.PkgId, path::String, internal_stderr::IJulia.IJuliaStdio{Base.PipeEndpoint}, internal_stdout::IJulia.IJuliaStdio{Base.PipeEndpoint}, 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

```

I have no idea why I am getting this error. Because I saw that DifferentialEquation package precompiled successfully when I update julia

---

<div class="post-metadata">

**Author:** ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Post date:** [February 6, 2023, 1:16am UTC](https://discourse.julialang.org/t/julia-info-precompiling-differentialequations-0c46a032-eb83-5123-abaf-570d42b7fbaa-error-loaderror-undefvarerror-undefmatrix-not-defined/94112/2 "2023-02-06T01:16:04Z")

</div>

Can you try `]up` and see if it’s good?

> DiffEqSensitivity

Swap that for `SciMLSensitivity`. DiffEqSensitivity was deprecated more than a year ago. Remove it and upgrade the packages and you should get a much newer set.