This documentation is not using the current rendering mechanism and will be deleted by December 31st, 2020. The extension maintainer should switch to the new system. Details on how to use the rendering mechanism can be found here.
When you need to debug something in EXT:solr the extension allows you to write several information to the TYPO3 logging framework.
This can be helpful to analyze e.g.:
- What is happening during the indexing?
- What is going when a search in the frontend is triggered?