# UndefVarError: \`Grid\` not defined in \`Main\`
**URL:** https://discourse.julialang.org/t/undefvarerror-grid-not-defined-in-main/134290
**Category:** New to Julia
**Created:** [December 2, 2025, 1:27pm UTC](https://discourse.julialang.org/t/undefvarerror-grid-not-defined-in-main/134290 "2025-12-02T13:27:55Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@mshafiquehu](https://discourse.julialang.org/u/mshafiquehu)
#### Post date: [December 2, 2025, 1:27pm UTC](https://discourse.julialang.org/t/undefvarerror-grid-not-defined-in-main/134290/1 "2025-12-02T13:27:55Z")
UndefVarError: `Grid` not defined in `Main` I want to figured out this error, and I have also define my Grid in main but still got the error.
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### Author:  [@karei](https://discourse.julialang.org/u/karei)
#### Post date: [December 2, 2025, 1:37pm UTC](https://discourse.julialang.org/t/undefvarerror-grid-not-defined-in-main/134290/2 "2025-12-02T13:37:04Z")
Hello, welcome to the Julia community. Could you share your code?
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### Author:  [@mshafiquehu](https://discourse.julialang.org/u/mshafiquehu)
#### Post date: [December 2, 2025, 2:25pm UTC](https://discourse.julialang.org/t/undefvarerror-grid-not-defined-in-main/134290/3 "2025-12-02T14:25:11Z")
Sorry I am not be easy with this, its personal for our research work.
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### Author:  [@nilshg](https://discourse.julialang.org/u/nilshg)
#### Post date: [December 2, 2025, 3:04pm UTC](https://discourse.julialang.org/t/undefvarerror-grid-not-defined-in-main/134290/4 "2025-12-02T15:04:02Z")
There’s no way anyone will be able to help you based on your description of the issue.
You should try to turn your code into an MWE - you say you have defined `Grid` in your code but are getting the error after. Your MWE should be the shortest possible code that reproduces this error, something like:
```julia-auto
julia> Grid = "something"
"something"
julia> Grid
"something"
julia> Grod
ERROR: UndefVarError: `Grod` not defined in `Main`
Suggestion: check for spelling errors or missing imports.
```
Here I define `Grid` and then access it afterwards, and I don’t get an error. Try to condense your issue down to the lines that defines `Grid` and then the line which actually raises the error.