> For the complete documentation index, see [llms.txt](https://help.bioinsight.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.bioinsight.illumina.com/tso500/dragen-tso-500-guides/dragen-tso-500-v2.6/troubleshooting/standalone-dragen-server-troubleshooting.md).

# Standalone DRAGEN Server - Troubleshooting

| Failure Type                                                          | Actions                                                                                                                                                                                                                                                                                                                                                                    |
| --------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| The output file directory contains information from previous analyses | <p>If this issue is seen, specify a new target output folder and repeat analysis<br><br>To prevent this issue: specify an empty directory before starting analysis</p>                                                                                                                                                                                                     |
| Multinode Gather                                                      | If the following error appears, check if the sample or pair ID was included multiple times during separate node analysis runs, before being gathered together. If the error exists, rerun one of the analyses without the duplicate and reattempt gathering. `ERROR:Gather:Destination file ... already exists - check if the same sample ID is in multiple input folders` |


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