[BUG] Tru() function fails either due to missing alembic.ini file or KeyError: 'formatters' about trulens HOT 6 CLOSED

The issue you're encountering with trulens_eval version 0.28.0, related to either a missing alembic.ini file or a KeyError for 'formatters', seems to stem from changes or missing configurations in this specific version. The alembic.ini file is crucial for Alembic to manage database migrations, and the KeyError suggests a possible misconfiguration or missing section in this file or related configuration files.

To address this issue, consider the following steps:

1. Verify Installation and Dependencies: Ensure that all dependencies are correctly installed. This includes not only trulens_eval but also alembic and SQLAlchemy, as they are closely tied to the functionality that seems to be failing.

2. Check for Version Conflicts: Use utilities provided by trulens_eval to check for any version conflicts among installed packages, especially those related to alembic and SQLAlchemy.

3. Review Documentation or Source Code: If possible, review the trulens_eval documentation or source code for any notes on changes to the Tru() function or database migration process between versions 0.27.0 and 0.28.0.

4. Reach Out to Maintainers: If the issue persists, consider reaching out to the trulens_eval maintainers for more direct support, as they may offer specific guidance or acknowledge a known issue with the version in question.

Downgrading to version 0.27.0 as a temporary workaround is sensible, but for a long-term solution, following these steps should help identify and resolve the root cause of the problem.

Sources

• trulens_eval/trulens_eval/utils/imports.py
• trulens_eval/trulens_eval/database/migrations/alembic.ini
• trulens_eval/trulens_eval/tru.py

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Getting the same error using 0.28.0, but back to 0.27.2 is work!

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Hi @piotrm0 , just tested with the patch release and that has fixed the issue for me, thanks!

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Getting the same error!

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Thanks for the report. I'm having trouble replicating with the listed versions. Can you post the entirety of python --version and pip list?

Nevermind. I can replicate it on a fresh env.

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Hi again. I found one issue which might be the problem here. A patch release 0.28.1 is up. Please update trulens_eval and let me know if the issue is fixed.

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