# Issues with CSV in Julia 1.6.2

**URL:** <https://discourse.julialang.org/t/issues-with-csv-in-julia-1-6-2/67507>\
**Category:** Data\
**Tags:** csv\
**Created:** [September 1, 2021, 2:44pm UTC](https://discourse.julialang.org/t/issues-with-csv-in-julia-1-6-2/67507 "2021-09-01T14:44:51Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![compleat](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/compleat/32/8958_2.png) [@compleat](https://discourse.julialang.org/u/compleat)\
**Post date:** [September 1, 2021, 2:48pm UTC](https://discourse.julialang.org/t/issues-with-csv-in-julia-1-6-2/67507/3 "2021-09-01T14:48:54Z")

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Apologies I should have given the link to the (very active) thread… it will take me a minute to find it…

> [@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):
>
> Hi all, Yesterday I found that CSV.jl is failing in precompiling when it is imported in a Jupyter notebook. For testing, it is tried in a new environment only with CSV, but it failed the same way. See below for the error message. An intriguing thing is that CSV.jl gets imported and precompiled fine when it is tried in the REPL or a script. The version of Julia is Version 1.6.2 on Mac (official one from the Julia website), and CSV.jl v0.8.5 is added using Pkg. I wonder what I am doing wrong. …

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