Change8
Error9 reports

Fix NotImplementedError

in Unsloth

Solution

The "NotImplementedError" in Unsloth usually arises when a specific feature or combination of features (like fast_inference with full_finetuning) hasn't been fully implemented yet for the chosen model or configuration. To fix it, either avoid using the unsupported feature combination (e.g., set `fast_inference = False` if you're using `full_finetuning = True`), choose a different Unsloth-compatible model that supports the desired features, or check for updates to Unsloth, as the feature might be implemented in a newer version. Often, the error message itself will suggest the feature causing the problem explicitly.

Timeline

First reported:Sep 27, 2025
Last reported:Nov 28, 2025

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