# Missing reference when developing a package in VSCode

**URL:** <https://discourse.julialang.org/t/missing-reference-when-developing-a-package-in-vscode/75939>\
**Category:** VS Code\
**Created:** [February 7, 2022, 9:23am UTC](https://discourse.julialang.org/t/missing-reference-when-developing-a-package-in-vscode/75939 "2022-02-07T09:23:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![CarloLucibello](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/carlolucibello/32/3278_2.png) [@CarloLucibello](https://discourse.julialang.org/u/CarloLucibello)\
**Post date:** [February 7, 2022, 9:23am UTC](https://discourse.julialang.org/t/missing-reference-when-developing-a-package-in-vscode/75939/1 "2022-02-07T09:23:59Z")

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Hi all,  
I’m developing a package with VSCode so the package environment is activated in VSCode.  
The package name is `GraphNeuralNetworks`.  
In order to test some features, I created a `test.jl` file in the project root folder, so outside of the `src/` directory. The question is, why do I get those wiggly yellow lines (missing reference) when writing  
`using GraphNeuralNetworks` since it is supposed to be visible in the environment?

 ![Schermata del 2022-02-07 10-23-08](https://global.discourse-cdn.com/julialang/original/3X/1/7/173f776251308260f52566ca53fb8f3ccbbd41fc.png)