# ERROR: LoadError: importing WaterLily into Main conflicts with an existing identifier

**URL:** https://discourse.julialang.org/t/error-loaderror-importing-waterlily-into-main-conflicts-with-an-existing-identifier/56086
**Category:** General Usage
**Created:** [February 26, 2021, 1:30pm UTC](https://discourse.julialang.org/t/error-loaderror-importing-waterlily-into-main-conflicts-with-an-existing-identifier/56086 "2021-02-26T13:30:49Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![meck](https://avatars.discourse-cdn.com/v4/letter/m/e36b37/32.png) [@meck](https://discourse.julialang.org/u/meck)
#### Post date: [February 26, 2021, 1:30pm UTC](https://discourse.julialang.org/t/error-loaderror-importing-waterlily-into-main-conflicts-with-an-existing-identifier/56086/1 "2021-02-26T13:30:50Z")

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Hello,  
this is my first Julia Repo I am trying to run, so maybe it is a beginners Julia problem. However I want to ask this here as well, if I may.

 ![image](https://global.discourse-cdn.com/julialang/original/3X/7/6/76435f4023354b14a8d92bb7952bb97121a59b4a.png)

When trying to run a Script from folder examples I get the mentioned Error. Does someone know the solution to this?  
Thank you!

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### Author: ![hendri54](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/hendri54/32/9621_2.png) [@hendri54](https://discourse.julialang.org/u/hendri54)
#### Post date: [February 26, 2021, 4:51pm UTC](https://discourse.julialang.org/t/error-loaderror-importing-waterlily-into-main-conflicts-with-an-existing-identifier/56086/2 "2021-02-26T16:51:48Z")

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It’s hard to say exactly given the screenshot shows only part of the code.  
One possibility: you are not using `Revise.jl`. Or you are trying to redefine a constant, which requires a REPL restart.

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### Author: ![meck](https://avatars.discourse-cdn.com/v4/letter/m/e36b37/32.png) [@meck](https://discourse.julialang.org/u/meck)
#### Post date: [February 27, 2021, 7:20am UTC](https://discourse.julialang.org/t/error-loaderror-importing-waterlily-into-main-conflicts-with-an-existing-identifier/56086/3 "2021-02-27T07:20:08Z")

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Your first statement is correct, I am not using Revise.jl. May you give me some pointers how to use it in this situation please?

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### Author: ![tim.holy](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tim.holy/32/52_2.png) [@tim.holy](https://discourse.julialang.org/u/tim.holy)
#### Post date: [February 27, 2021, 10:20am UTC](https://discourse.julialang.org/t/error-loaderror-importing-waterlily-into-main-conflicts-with-an-existing-identifier/56086/4 "2021-02-27T10:20:05Z")

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It looks like you’re trying to import a Jupyter notebook as if it were Julia code. Examine `ScalarTransport.ipynb` in a text editor (not in Jupyter) to see why this is problematic.