# Error output compiling

**URL:** <https://community.freefem.org/t/error-output-compiling/2465>\
**Category:** General Discussion\
**Created:** [May 17, 2023, 8:45am UTC](https://community.freefem.org/t/error-output-compiling/2465 "2023-05-17T08:45:52Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![edelgado](https://avatars.discourse-cdn.com/v4/letter/e/5e9695/32.png) [@edelgado](https://community.freefem.org/u/edelgado)\
**Post date:** [May 17, 2023, 8:45am UTC](https://community.freefem.org/t/error-output-compiling/2465/1 "2023-05-17T08:45:52Z")

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Dear FreeFem++ users,

I have a quite large code, and when I compile it, I get the following error after compiling, where the line number xxx is the last line of my code:  
Error line number xxx , in file – unknown --, before token  
syntax error

I don’t really know what is causing this error, so it is difficult to find out where is it. Do you know the reason of this output?

Best,  
Enrique

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**Author:** ![marchywka](https://avatars.discourse-cdn.com/v4/letter/m/ee59a6/32.png) [@marchywka](https://community.freefem.org/u/marchywka)\
**Post date:** [May 17, 2023, 11:37am UTC](https://community.freefem.org/t/error-output-compiling/2465/2 "2023-05-17T11:37:32Z")

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Without posting the code its hard to guess. If you have the FF syntax highlighting  
I guess you could help- could be a bad character or quote/paran / brace  
mismatch hard to guess.

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**Author:** ![edelgado](https://avatars.discourse-cdn.com/v4/letter/e/5e9695/32.png) [@edelgado](https://community.freefem.org/u/edelgado)\
**Post date:** [May 17, 2023, 2:12pm UTC](https://community.freefem.org/t/error-output-compiling/2465/3 "2023-05-17T14:12:37Z")

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effectively it was a brace, but due to such large code, it was hard to find out where. Thank you so much for your help!