# ERROR: Unsatisfiable requirements detected for package TrajOptPlots

**URL:** <https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-trajoptplots/121321>\
**Category:** General Usage\
**Tags:** question\
**Created:** [October 15, 2024, 9:52am UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-trajoptplots/121321 "2024-10-15T09:52:18Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![jay\_Gao](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jay_gao/32/212251_2.png) [@jay\_Gao](https://discourse.julialang.org/u/jay_Gao)\
**Post date:** [October 15, 2024, 9:52am UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-trajoptplots/121321/1 "2024-10-15T09:52:18Z")

</div>

when I add TrajOptPlots , I got an error message:

```julia
(TrajectoryOptimization-examples) pkg> add TrajOptPlots
    Updating registry at `C:\Users\xxx\.julia\registries\General`
    Updating git-repo `https://github.com/JuliaRegistries/General.git`
   Resolving package versions...
ERROR: Unsatisfiable requirements detected for package TrajOptPlots [7770976a]:
 TrajOptPlots [7770976a] log:
 ├─possible versions are: 0.1.0-0.2.0 or uninstalled
 ├─restricted to versions * by an explicit requirement, leaving only versions 0.1.0-0.2.0
 └─restricted by compatibility requirements with RobotDynamics [38ceca67] to versions: uninstalled — no versions left
   └─RobotDynamics [38ceca67] log:
     ├─possible versions are: 0.0.1-0.4.8 or uninstalled
     └─restricted to versions 0.4.8-0.4 by TrajectoryOptimization [c79d492b], leaving only versions 0.4.8
       └─TrajectoryOptimization [c79d492b] log:
         ├─possible versions are: 0.7.1 or uninstalled
         └─TrajectoryOptimization [c79d492b] is fixed to version 0.7.1

```

This may have something wrong with version dependency. But I couldn’t install the other versions of the TrajectoryOptimization package because it might cause version dependency issues with the other packages.  
How can I solve this problem? What is the proper way to install TrajOptPlots.jl?