# q2-ITSxpress generates empty sequences?

**URL:** https://forum.qiime2.org/t/q2-itsxpress-generates-empty-sequences/6588
**Category:** User Support
**Created:** [October 24, 2018, 2:48pm UTC](https://forum.qiime2.org/t/q2-itsxpress-generates-empty-sequences/6588 "2018-10-24T14:48:54Z")
**Posts on this page:** 1
**Showing post:** 8

<div class="post-metadata">

### Author: ![Adam\_Rivers](https://forum.qiime2.org/user_avatar/forum.qiime2.org/adam_rivers/32/10143_2.png) [@Adam\_Rivers](https://forum.qiime2.org/u/Adam_Rivers)
#### Post date: [November 6, 2018, 3:12pm UTC](https://forum.qiime2.org/t/q2-itsxpress-generates-empty-sequences/6588/8 "2018-11-06T15:12:27Z")

</div>

I'm still happy to look at your files directly, but another user had this issue and it turned out that their file had contaminants not fungi and was not generating any fungal reads. I'm planning to update itsxpress to give a helpful error message and process the other samples rather than just crashing when it encounters this error. More information on this error is here: [Trimming fungal demultiplexed paired-end sequences before dada2 - #13 by einamart](https://forum.qiime2.org/t/trimming-fungal-demultiplexed-paired-end-sequences-before-dada2/6644/13).

---

_[View the full topic](https://forum.qiime2.org/t/q2-itsxpress-generates-empty-sequences/6588)._