# Plugin error from feature-classifier: pop from empty list

**URL:** https://forum.qiime2.org/t/plugin-error-from-feature-classifier-pop-from-empty-list/1431
**Category:** User Support
**Tags:** feature-classifier, pending-development
**Created:** [October 6, 2017, 6:14pm UTC](https://forum.qiime2.org/t/plugin-error-from-feature-classifier-pop-from-empty-list/1431 "2017-10-06T18:14:35Z")
**Posts on this page:** 1
**Showing post:** 13

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### Author: ![jairideout](https://forum.qiime2.org/user_avatar/forum.qiime2.org/jairideout/32/9_2.png) [@jairideout](https://forum.qiime2.org/u/jairideout)
#### Post date: [October 19, 2017, 5:16pm UTC](https://forum.qiime2.org/t/plugin-error-from-feature-classifier-pop-from-empty-list/1431/13 "2017-10-19T17:16:02Z")

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Bug report is being tracked here:

> <https://github.com/qiime2/q2-feature-classifier/issues/93>
>
> \*\*Bug Description\*\*
> If one of the taxonomies is not complete, for instance
> 
> \`…k\_Eukaryota; p\_Parabasalia; c\_Hypotrichomonadea; o\_Hypotrichomonadida; f\_Hypotrichomonadidae; g\_Trichomitus sp.\`
> 
> does not go all the way to species level, you get an uninformative \`pop from empty list\` error when you run \`classify-sklearn\`.
> 
> \*\*Comments\*\*
> It would be better if there was an error message when training the classifier.
> 
> \*\*References\*\*
> This issue was discovered \[here\](https://forum.qiime2.org/t/plugin-error-from-feature-classifier-pop-from-empty-list/1431/11).

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