# Error: div by 0

**URL:** <https://community.freefem.org/t/error-div-by-0/3508>\
**Category:** General Discussion\
**Created:** [September 21, 2024, 7:43am UTC](https://community.freefem.org/t/error-div-by-0/3508 "2024-09-21T07:43:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![yongheng](https://avatars.discourse-cdn.com/v4/letter/y/f04885/32.png) [@yongheng](https://community.freefem.org/u/yongheng)\
**Post date:** [September 21, 2024, 7:43am UTC](https://community.freefem.org/t/error-div-by-0/3508/1 "2024-09-21T07:43:58Z")

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When I use `A=Laplace(Vh,Vh);` , I encounter a “Div by 0” error. Why is this happening? I am using a relatively complex mesh; could it be the cause of my mesh?