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# Troubleshoot Passage Extractor

This section contains some information about how to check that Passage Extractor is working correctly.

Passage Extractor Does Not Return Any Answers

- Check that you have a question classifier trained and configured. Answer Server writes an error to the application log if there is no available classifier. See Train Passage Extractor Classifiers.

- Check that the host and port details for the subcomponents are correct. In particular, check that the IDOL Content component that you use for the data store is configured correctly. See Configure the Passage Extractor System.

Passage Extractor Returns an Answer that is Incorrect or Unusual

- Increase the log level for your Answer Server to `FULL`, by modifying the log stream configuration. See Customize Logging.

  When the log level is set to `FULL`, Answer Server generates a lot of extra information about how Passage Extractor found its answers, including the candidate passages, extracted entities, and scoring information.

  To improve answers in these cases, you might need to add additional entities, or rephrase the question. You might also want to check the data in your IDOL Content component data store, to see whether your data set contains appropriate content for the answer.

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