# \#dada2\_learnerrors

**URL:** https://help.galaxyproject.org/tag/dada2-learnerrors/716.md

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## [Dada remove sequencing error -\> Fatal error: Exit code 139 ()](https://help.galaxyproject.org/t/dada-remove-sequencing-error-fatal-error-exit-code-139/16499)

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**Author:** [@Cecile\_M](https://help.galaxyproject.org/u/Cecile_M)\
**Replies:** 2\
**Last updated:** [November 24, 2025, 2:31pm UTC](https://help.galaxyproject.org/t/dada-remove-sequencing-error-fatal-error-exit-code-139/16499 "2025-11-24T14:31:15Z")

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I’ve used the dada2 workflow to analyse 16S rRNA sequences and at the step ‘dada Remove sequencing errors’ (Galaxy Version 1.34.0+galaxy0), I get the following error message for my reverse reads only: \*\*\* caught segfau…