There are similar issues that have been reported and resolved:

1. Generate an empty response after importing Knowledge (closed):

   • Solution: Ensure the data import process is complete and correct. Verify the model selection and configuration, especially for language support. Check application settings related to AI commands and context. Consider version-specific issues and updates ^[1].

2. Full-Text Search problem (closed):

   • Solution: Configure Weaviate to use an appropriate vectorizer module. Update the docker-compose.yml file to include the vectorizer module and restart the Docker containers ^[2].

For your specific issue with the Economical indexing mode in version 0.8.0, the problem lies in the indexing method used. The Economical mode employs an offline vector engine and keyword indexing, which reduces accuracy. The retrieval setting is limited to Inverted Index, which may not be as effective in recalling relevant text segments compared to other methods like High-Quality mode ^[3][4].

Additionally, specific error messages like "no se pudieron indexar los documentos" (documents could not be indexed) are generated when the Economical indexing mode fails to recall documents ^[5].

To improve recall accuracy, consider using a different indexing mode, such as High-Quality mode, which utilizes more advanced retrieval methods.

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