# MinPath12hmp.py:804 error humann3

**URL:** https://forum.biobakery.org/t/minpath12hmp-py-804-error-humann3/7657
**Category:** HUMAnN
**Created:** [December 14, 2024, 8:21pm UTC](https://forum.biobakery.org/t/minpath12hmp-py-804-error-humann3/7657 "2024-12-14T20:21:30Z")
**Posts on this page:** 1
**Showing post:** 6

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### Author: ![franzosa](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.biobakery.org/franzosa/32/3511_2.png) [@franzosa](https://forum.biobakery.org/u/franzosa)
#### Post date: [January 2, 2025, 5:20pm UTC](https://forum.biobakery.org/t/minpath12hmp-py-804-error-humann3/7657/6 "2025-01-02T17:20:28Z")

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The initial issue posted here was discussed here:

> [@No species identified and empty pathway files created](https://forum.biobakery.org/t/no-species-identified-and-empty-pathway-files-created/5136/6):
>
> Hello, I received this message humann v3.7 MetaPhlAn version 3.0.9 (17 May 2021) Bowtie2 version 2.2.3 home/kbrokordt/miniconda3/lib/python3.12/site-packages/humann/quantify/MinPath12hmp.py:804: SyntaxWarning: invalid escape sequence ‘\d’ m = re.match(‘[[1]](#footnote-15457-1)+(?P\d+)’, aline) /home/kbrokordt/miniconda3/lib/python3.12/site-packages/humann/quantify/MinPath12hmp.py:804: SyntaxWarning: invalid escape sequence ‘\d’ m = re.match(‘[[2]](#footnote-15457-2)+(?P\d+)’, aline) Output files will be written to: /home/kbroko…

It’s due to a change in Python’s regex engine in v3.12. If you install HUMAnN in an environment based on an earlier Python version it should resolve this error.

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