This error message suggests that there is an issue with the scikit-learn pipeline, specifically with the ColumnTransformer object. 'nametofittedpassthrough' is an internal attribute used by ColumnTransformer to keep track of the columns that are not transformed. The attribute may not have been initialized properly or may have been deleted accidentally.
To resolve this issue, try checking your ColumnTransformer code and ensure that it is set up correctly. You can also try updating your scikit-learn version to the latest version, as this issue may be fixed in newer versions. Additionally, try checking if you are incorrectly calling this attribute.
