# ERROR: Unknown package DataStructures found in the compatibility requirements of DiffEqBase

**URL:** <https://discourse.julialang.org/t/error-unknown-package-datastructures-found-in-the-compatibility-requirements-of-diffeqbase/45650>\
**Category:** General Usage\
**Tags:** question, package\
**Created:** [August 28, 2020, 12:34am UTC](https://discourse.julialang.org/t/error-unknown-package-datastructures-found-in-the-compatibility-requirements-of-diffeqbase/45650 "2020-08-28T00:34:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![anon22248738](https://avatars.discourse-cdn.com/v4/letter/a/f05b48/32.png) [@anon22248738](https://discourse.julialang.org/u/anon22248738)\
**Post date:** [August 28, 2020, 12:34am UTC](https://discourse.julialang.org/t/error-unknown-package-datastructures-found-in-the-compatibility-requirements-of-diffeqbase/45650/1 "2020-08-28T00:34:01Z")

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I was trying to get Surrogates.jl to work on my computer but ended up with this error after trying to re-update to the current version of DiffEqFlux. Now I can’t add any packages, and Pkg.resolve() and Pkg.update() also throw this error.

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**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:** [August 28, 2020, 12:53am UTC](https://discourse.julialang.org/t/error-unknown-package-datastructures-found-in-the-compatibility-requirements-of-diffeqbase/45650/2 "2020-08-28T00:53:34Z")

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Long story short, DataStructures broke a ton in a really weird way and [https://github.com/JuliaRegistries/General/pull/20420](https://github.com/JuliaRegistries/General/pull/20420) is the end of this saga. Sorry.

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**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:** [August 28, 2020, 1:09am UTC](https://discourse.julialang.org/t/error-unknown-package-datastructures-found-in-the-compatibility-requirements-of-diffeqbase/45650/3 "2020-08-28T01:09:10Z")

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Should be fixed now. Sorry for the confusion.