# Troubleshooting

### In this section

* [No output found when running a map](https://help.qlik.com/talend/en-US/data-mapper-user-guide/8.0-R2025-09/no-output-when-running-map)
* [XML namespace issues](https://help.qlik.com/talend/en-US/data-mapper-user-guide/8.0-R2025-09/xml-namespace-issues?id=198)