# qiime feature-classifier classify-sklearn Missing option
**URL:** https://forum.qiime2.org/t/qiime-feature-classifier-classify-sklearn-missing-option/30312
**Category:** Technical Support
**Tags:** feature-classifier, taxonomy
**Created:** [May 23, 2024, 7:15pm UTC](https://forum.qiime2.org/t/qiime-feature-classifier-classify-sklearn-missing-option/30312 "2024-05-23T19:15:50Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@LisethBolCol](https://forum.qiime2.org/u/LisethBolCol)
#### Post date: [May 23, 2024, 7:15pm UTC](https://forum.qiime2.org/t/qiime-feature-classifier-classify-sklearn-missing-option/30312/1 "2024-05-23T19:15:50Z")
Hello to all the community
I am performing bacterial microbiome analysis of pigeon fecal matter sequences using the Qiime program. I am using qiime2 with linux as windows subsystem and WSL2-Ubuntu-22.04
At this moment I am running the command to test the classifier, which is the following
qiime feature-classifier classify-sklearn
--i-classifier classifier2040.qza \
--i-reads rep-seqs-dada2.qza
--o-classification taxonomy2040.qza
qiime metadata tabulate
--m-input-file taxonomy2040.qza
--o-visualization taxonomy2040.qzv
When I run it it gives me the following problem:
I don't understand what could be happening or if I have made a mistake before that this problem appears. If someone can please guide me on what I'm doing wrong, I would really appreciate it.
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### Author:  [@timanix](https://forum.qiime2.org/u/timanix)
#### Post date: [May 23, 2024, 8:02pm UTC](https://forum.qiime2.org/t/qiime-feature-classifier-classify-sklearn-missing-option/30312/2 "2024-05-23T20:02:17Z")
Hello!
Could you check if there are no spaces after each backslash in the same line?
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### Author:  [@LisethBolCol](https://forum.qiime2.org/u/LisethBolCol)
#### Post date: [May 23, 2024, 9:10pm UTC](https://forum.qiime2.org/t/qiime-feature-classifier-classify-sklearn-missing-option/30312/3 "2024-05-23T21:10:31Z")
Hello and thank you very much for helping me.
I checked and noticed that one of the command lines had a space and I already corrected it. For now it seems to be running without a problem.
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### Author:  [@LisethBolCol](https://forum.qiime2.org/u/LisethBolCol)
#### Post date: [May 23, 2024, 9:30pm UTC](https://forum.qiime2.org/t/qiime-feature-classifier-classify-sklearn-missing-option/30312/4 "2024-05-23T21:30:01Z")
Hello timanix, thank you very much for your advice. The truth is I didn't know that a small space after the diagonal line could cause errors. Thank you very much, I will be more attentive.
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### Author:  [@timanix](https://forum.qiime2.org/u/timanix)
#### Post date: [May 24, 2024, 4:48am UTC](https://forum.qiime2.org/t/qiime-feature-classifier-classify-sklearn-missing-option/30312/5 "2024-05-24T04:48:17Z")
> [@LisethBolCol](#):
>
> The truth is I didn't know that a small space after the diagonal line could cause errors.
I didn't know it as well until I put one there and encountered the same error =).
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### Author:  [@system](https://forum.qiime2.org/u/system)
#### Post date: [June 24, 2024, 10:48am UTC](https://forum.qiime2.org/t/qiime-feature-classifier-classify-sklearn-missing-option/30312/6 "2024-06-24T10:48:57Z")
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