# Error in InfiniteOpt.jl quick start example

**URL:** <https://discourse.julialang.org/t/error-in-infiniteopt-jl-quick-start-example/94275>\
**Category:** Optimization (Mathematical)\
**Tags:** jump, infiniteopt\
**Created:** [February 8, 2023, 1:40pm UTC](https://discourse.julialang.org/t/error-in-infiniteopt-jl-quick-start-example/94275 "2023-02-08T13:40:31Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![Jian\_ZUO](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jian_zuo/32/33738_2.png) [@Jian\_ZUO](https://discourse.julialang.org/u/Jian_ZUO)\
**Post date:** [February 8, 2023, 1:40pm UTC](https://discourse.julialang.org/t/error-in-infiniteopt-jl-quick-start-example/94275/1 "2023-02-08T13:40:31Z")

</div>

Hi everyone,  
I have tried to run a tutorial example in InfiniteOpt.jl.

```julia
using InfiniteOpt, Distributions, Ipopt

# DEFINE THE PROBLEM CONSTANTS

μ = 1; σ = 0.2

x0 = [0, 0]; v0 = [0, 0]

p = [1 4 6 1; 1 3 0 1]; tw = [0, 25, 50, 60]

I = 1:2; W = 1:4

# INITIALIZE THE MODEL

model = InfiniteModel(Ipopt.Optimizer)

# INITIALIZE THE PARAMETERS

@finite_parameter(model, ϵ == 10)

@infinite_parameter(model, t in [0, 60], num_supports = 61,

derivative_method = OrthogonalCollocation(2))

@infinite_parameter(model, ξ ~ Normal(μ, σ^2), num_supports = 10)

# INITIALIZE THE VARIABLES

@variable(model, x[I], Infinite(t, ξ), start = 0)

@variable(model, v[I], Infinite(t, ξ), start = 0)

@variable(model, u[I], Infinite(t), start = 0)

@variable(model, y[W] >= 0, Infinite(ξ), start = 0)

# SET THE OBJECTIVE

@objective(model, Min, integral(sum(u[i]^2 for i in I), t))

# SET THE INITIAL CONDITIONS

@constraint(model, [i in I], x[i](0, ξ) == x0[i])

@constraint(model, [i in I], v[i](0, ξ) == v0[i])

# SET THE PROBLEM CONSTRAINTS

@constraint(model, c1[i in I], @deriv(x[i], t) == v[i])

@constraint(model, c2[i in I], ξ * @deriv(v[i], t) == u[i])

@constraint(model, c3[w in W], y[w] == sum((x[i](tw[w], ξ) - p[i, w])^2 for i in I))

@constraint(model, c4, expect(sum(y[w] for w in W), ξ) <= ϵ)

# SOLVE THE MODEL

optimize!(model)

# GET THE RESULTS

termination_status(model)

opt_obj = objective_value(model)

u_opt = value.(u)

u_ts = supports.(u)

```

But I got an error:

```julia
type Model has no field nlp_data

Stacktrace:
  [1] setproperty!(x::Model, f::Symbol, v::Nothing)
    @ Base ./Base.jl:39
  [2] clear_optimizer_model_build!(model::Model)
    @ InfiniteOpt ~/.julia/packages/InfiniteOpt/k0mve/src/optimize.jl:489
  [3] clear_optimizer_model_build!(model::InfiniteModel)
    @ InfiniteOpt ~/.julia/packages/InfiniteOpt/k0mve/src/optimize.jl:506
  [4] build_optimizer_model!(model::InfiniteModel, key::Val{:TransData}; check_support_dims::Bool)
    @ InfiniteOpt.TranscriptionOpt ~/.julia/packages/InfiniteOpt/k0mve/src/TranscriptionOpt/optimize.jl:32
  [5] build_optimizer_model!(model::InfiniteModel, key::Val{:TransData})
    @ InfiniteOpt.TranscriptionOpt ~/.julia/packages/InfiniteOpt/k0mve/src/TranscriptionOpt/optimize.jl:26
  [6] build_optimizer_model!(model::InfiniteModel; kwargs::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ InfiniteOpt ~/.julia/packages/InfiniteOpt/k0mve/src/optimize.jl:536
  [7] build_optimizer_model!(model::InfiniteModel)
    @ InfiniteOpt ~/.julia/packages/InfiniteOpt/k0mve/src/optimize.jl:530
  [8] #optimize!#475
    @ ~/.julia/packages/InfiniteOpt/k0mve/src/optimize.jl:926 [inlined]
  [9] optimize!(model::InfiniteModel)
    @ InfiniteOpt ~/.julia/packages/InfiniteOpt/k0mve/src/optimize.jl:924
 [10] top-level scope
    @ ~/Julia_projects/Maintenance_EMS/RUL_dist.ipynb:38

```

Thanks for checking my problem!

---

<div class="post-metadata">

**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\
**Post date:** [February 8, 2023, 6:45pm UTC](https://discourse.julialang.org/t/error-in-infiniteopt-jl-quick-start-example/94275/2 "2023-02-08T18:45:22Z")

</div>

What is the output of:

```plaintext
import Pkg
Pkg.status()

```

It looks like you’ve managed to install some incompatible versions of JuMP and InfiniteOpt.

cc @pulsipher

---

<div class="post-metadata">

**Author:** ![Jian\_ZUO](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jian_zuo/32/33738_2.png) [@Jian\_ZUO](https://discourse.julialang.org/u/Jian_ZUO)\
**Post date:** [February 8, 2023, 7:31pm UTC](https://discourse.julialang.org/t/error-in-infiniteopt-jl-quick-start-example/94275/3 "2023-02-08T19:31:29Z")

</div>

Here are the versions of JuMP and InfiniteOpt:

 ![junp](https://global.discourse-cdn.com/julialang/original/3X/a/3/a30a282b043a42fe95c93ff19693704b9bff6048.png)  
Thanks!

---

<div class="post-metadata">

**Author:** ![pulsipher](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pulsipher/32/10461_2.png) [@pulsipher](https://discourse.julialang.org/u/pulsipher)\
**Post date:** [February 8, 2023, 7:35pm UTC](https://discourse.julialang.org/t/error-in-infiniteopt-jl-quick-start-example/94275/4 "2023-02-08T19:35:38Z")

</div>

You’ll need to update InfiniteOpt to `v0.5.6`. JuMP changed the way it handled nonlinear expressions with `v1.2`. Hence, `v0.5.5` and older versions of InfiniteOpt are not compatible with newer versions of JuMP.

---

<div class="post-metadata">

**Author:** ![Jian\_ZUO](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jian_zuo/32/33738_2.png) [@Jian\_ZUO](https://discourse.julialang.org/u/Jian_ZUO)\
**Post date:** [February 8, 2023, 8:32pm UTC](https://discourse.julialang.org/t/error-in-infiniteopt-jl-quick-start-example/94275/5 "2023-02-08T20:32:01Z")

</div>

Thank you very much!  
I can not install it for my base environment:

 ![jump1](https://global.discourse-cdn.com/julialang/original/3X/8/8/88984e7478633b838841b45a4ff378a64ff936fb.png)  
But I have tried with a new environment and managed to work with Infinite@0.5.6 and JuMP@v1.6.0. It works!

---

<div class="post-metadata">

**Author:** ![pulsipher](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pulsipher/32/10461_2.png) [@pulsipher](https://discourse.julialang.org/u/pulsipher)\
**Post date:** [February 9, 2023, 7:23pm UTC](https://discourse.julialang.org/t/error-in-infiniteopt-jl-quick-start-example/94275/6 "2023-02-09T19:23:37Z")

</div>

It is good practice to work with environments to avoid these compatibility issues.

In a fresh environment, I am able to install the latest version of all the packages needed for the quick start (i.e., InfiniteOpt v0.5.6 and JuMP v1.7).

```julia
(Test) pkg> add InfiniteOpt@0.5.6, JuMP@1.7, Ipopt, Distributions
   Resolving package versions...
    Updating `C:\Users\bbgui\Test\Project.toml`
  [31c24e10] + Distributions v0.25.80
  [20393b10] + InfiniteOpt v0.5.6
  [b6b21f68] + Ipopt v1.1.0
  [4076af6c] + JuMP v1.7.0
    Updating `C:\Users\bbgui\Test\Manifest.toml`
  [1520ce14] + AbstractTrees v0.4.4
  [6e4b80f9] + BenchmarkTools v1.3.2
  [49dc2e85] + Calculus v0.5.1
  [d360d2e6] + ChainRulesCore v1.15.7
  [9e997f8a] + ChangesOfVariables v0.1.5
  [523fee87] + CodecBzip2 v0.7.2
  [944b1d66] + CodecZlib v0.7.1
  [bbf7d656] + CommonSubexpressions v0.3.0
  [34da2185] + Compat v4.6.0
  [9a962f9c] + DataAPI v1.14.0
  [864edb3b] + DataStructures v0.18.13
  [b429d917] + DensityInterface v0.4.0
  [163ba53b] + DiffResults v1.1.0
  [b552c78f] + DiffRules v1.12.2
  [31c24e10] + Distributions v0.25.80
  [ffbed154] + DocStringExtensions v0.9.3
  [fa6b7ba4] + DualNumbers v0.6.8
  [442a2c76] + FastGaussQuadrature v0.4.9
  [1a297f60] + FillArrays v0.13.7
  [f6369f11] + ForwardDiff v0.10.34
  [34004b35] + HypergeometricFunctions v0.3.11
  [20393b10] + InfiniteOpt v0.5.6
  [3587e190] + InverseFunctions v0.1.8
  [b6b21f68] + Ipopt v1.1.0
  [92d709cd] + IrrationalConstants v0.1.1
  [692b3bcd] + JLLWrappers v1.4.1
  [682c06a0] + JSON v0.21.3
  [4076af6c] + JuMP v1.7.0
  [1d6d02ad] + LeftChildRightSiblingTrees v0.2.0
  [2ab3a3ac] + LogExpFunctions v0.3.21
  [1914dd2f] + MacroTools v0.5.10
  [b8f27783] + MathOptInterface v1.11.5
  [e1d29d7a] + Missings v1.1.0
  [d8a4904e] + MutableArithmetics v1.1.0
  [77ba4419] + NaNMath v1.0.1
  [bac558e1] + OrderedCollections v1.4.1
  [90014a1f] + PDMats v0.11.16
  [69de0a69] + Parsers v2.5.5
  [21216c6a] + Preferences v1.3.0
  [1fd47b50] + QuadGK v2.8.1
  [189a3867] + Reexport v1.2.2
  [79098fc4] + Rmath v0.7.1
  [66db9d55] + SnoopPrecompile v1.0.3
  [a2af1166] + SortingAlgorithms v1.1.0
  [276daf66] + SpecialFunctions v2.1.7
  [90137ffa] + StaticArrays v1.5.12
  [1e83bf80] + StaticArraysCore v1.4.0
  [82ae8749] + StatsAPI v1.5.0
  [2913bbd2] + StatsBase v0.33.21
  [4c63d2b9] + StatsFuns v1.1.1
  [3bb67fe8] + TranscodingStreams v0.9.11
  [ae81ac8f] + ASL_jll v0.1.3+0
  [6e34b625] + Bzip2_jll v1.0.8+0
  [9cc047cb] + Ipopt_jll v300.1400.400+0
  [d00139f3] + METIS_jll v5.1.2+0
  [d7ed1dd3] + MUMPS_seq_jll v5.4.1+0
  [656ef2d0] + OpenBLAS32_jll v0.3.17+0
  [efe28fd5] + OpenSpecFun_jll v0.5.5+0
  [f50d1b31] + Rmath_jll v0.4.0+0
  [0dad84c5] + ArgTools
  [56f22d72] + Artifacts
  [2a0f44e3] + Base64
  [ade2ca70] + Dates
  [f43a241f] + Downloads
  [b77e0a4c] + InteractiveUtils
  [b27032c2] + LibCURL
  [76f85450] + LibGit2
  [8f399da3] + Libdl
  [37e2e46d] + LinearAlgebra
  [56ddb016] + Logging
  [d6f4376e] + Markdown
  [a63ad114] + Mmap
  [ca575930] + NetworkOptions
  [44cfe95a] + Pkg
  [de0858da] + Printf
  [9abbd945] + Profile
  [3fa0cd96] + REPL
  [9a3f8284] + Random
  [ea8e919c] + SHA
  [9e88b42a] + Serialization
  [6462fe0b] + Sockets
  [2f01184e] + SparseArrays
  [10745b16] + Statistics
  [4607b0f0] + SuiteSparse
  [fa267f1f] + TOML
  [a4e569a6] + Tar
  [8dfed614] + Test
  [cf7118a7] + UUIDs
  [4ec0a83e] + Unicode
  [e66e0078] + CompilerSupportLibraries_jll
  [deac9b47] + LibCURL_jll
  [29816b5a] + LibSSH2_jll
  [c8ffd9c3] + MbedTLS_jll
  [14a3606d] + MozillaCACerts_jll
  [4536629a] + OpenBLAS_jll
  [05823500] + OpenLibm_jll
  [83775a58] + Zlib_jll
  [8e850b90] + libblastrampoline_jll
  [8e850ede] + nghttp2_jll
  [3f19e933] + p7zip_jll

```