# 2021: An error was encountered while running DADA2 in R (return code -9)

**URL:** https://forum.qiime2.org/t/2021-an-error-was-encountered-while-running-dada2-in-r-return-code-9/19145
**Category:** Technical Support
**Created:** [April 6, 2021, 8:53pm UTC](https://forum.qiime2.org/t/2021-an-error-was-encountered-while-running-dada2-in-r-return-code-9/19145 "2021-04-06T20:53:25Z")
**Posts on this page:** 1
**Showing post:** 16

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### Author: ![thermokarst](https://forum.qiime2.org/letter_avatar_proxy/v4/letter/t/8e7dd6/32.png) [@thermokarst](https://forum.qiime2.org/u/thermokarst)
#### Post date: [June 6, 2021, 9:44pm UTC](https://forum.qiime2.org/t/2021-an-error-was-encountered-while-running-dada2-in-r-return-code-9/19145/16 "2021-06-06T21:44:30Z")

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An off-topic reply has been split into a new topic: [A mapping file is different from a metadata file, is that true?](https://forum.qiime2.org/t/a-mapping-file-is-different-from-a-metadata-file-is-that-true/19814)

Please keep replies on-topic in the future.

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_[View the full topic](https://forum.qiime2.org/t/2021-an-error-was-encountered-while-running-dada2-in-r-return-code-9/19145)._