# What does this error report mean

**URL:** <https://community.freefem.org/t/what-does-this-error-report-mean/3923>\
**Category:** General Discussion\
**Created:** [May 19, 2025, 6:49am UTC](https://community.freefem.org/t/what-does-this-error-report-mean/3923 "2025-05-19T06:49:40Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![zxss](https://avatars.discourse-cdn.com/v4/letter/z/bc8723/32.png) [@zxss](https://community.freefem.org/u/zxss)\
**Post date:** [May 20, 2025, 6:02am UTC](https://community.freefem.org/t/what-does-this-error-report-mean/3923/4 "2025-05-20T06:02:24Z")

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Yes, after reading this post [Convect( ) in parallel - #2 by prj](https://community.freefem.org/t/convect-in-parallel/1270/2). I know that using ‘convect’ inside a ‘varf’ will generate wrong results for high timesteps. But it seems work at small time step as this post [Convect( ) in parallel - #6 by mojtaba.barzegari](https://community.freefem.org/t/convect-in-parallel/1270/6) shows. Anyway, I will change ‘convect’ in ‘varf’ with ‘convectParallel’ to see what will happen.  
Many thanks for your reply.

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