# Issues with the CSV package

**URL:** <https://discourse.julialang.org/t/issues-with-the-csv-package/110412>\
**Category:** New to Julia\
**Created:** [February 19, 2024, 4:01pm UTC](https://discourse.julialang.org/t/issues-with-the-csv-package/110412 "2024-02-19T16:01:00Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![mbauman](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mbauman/32/31082_2.png) [@mbauman](https://discourse.julialang.org/u/mbauman)\
**Post date:** [February 19, 2024, 4:21pm UTC](https://discourse.julialang.org/t/issues-with-the-csv-package/110412/2 "2024-02-19T16:21:49Z")

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You have some _very_ old versions of packages in there… somewhere… leading to these incompatibilities.

> [@CSV.jl fails precompling, TypeError: in Type{...} expression, expected UnionAll, got Type{Parsers.Options}](https://discourse.julialang.org/t/csv-jl-fails-precompling-typeerror-in-type-expression-expected-unionall-got-type-parsers-options/67195/3):
>
> This has come up a couple of times recently and is due to a new breaking release in the Parsers.jl v2.0 release, which in and of itself shouldn’t cause problems, since CSV.jl 0.8.5 has dependencies correctly capped, but still becomes an issue because there are unfortunate ways for package dependencies to get loaded without having the right versions. See [this slack thread](https://julialang.slack.com/archives/CBF3Z1D7V/p1628806926093700) for more details. Basically, it boils down to some 3rd-party package (in this case, probably IJulia.jl) loading a package like…

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