Lily Wang

This PR updates a test related to #683 just to check whether it was my local environment messing everything up. However, I have no ideas as to solutions -- anyone...

Parameters assigned to be fit (with `parameterize`) without corresponding training data result in somewhat esoteric error about gradient keys

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**Describe the bug** A fit recently failed on an IndexError, likely because parameters were assigned to be fit without corresponding training data. We (=Julianne) figured out the cause and how...

**Describe the bug** @barmoral and I are seeing the below when the uncertainty is undefined: ``` Traceback (most recent call last): File "software/anaconda/env/evaluator-cuda118/lib/python3.12/site-packages/pint/facets/numpy/quantity.py", line 244, in __getattr__ return getattr(self._magnitude, item)...

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> _This issue was auto-created as part of the Zenhub sub-issues migration. The original entity was opened on 2024-12-17. For more details see [this post](https://changelog.zenhub.com/migration-of-epics-projects-to-sub-issues-313645?zenhub_entity_id=Z2lkOi8vcmFwdG9yL1Byb2plY3QvODY2MzM)._