Quotation tool local model error

Running on Obesity corpus, filtered by: Source == age, year <=2008, month >=10, results: 60 documents. 
Suspect the input data structure becomes broken.

<img width="783" height="738" alt="Image" src="https://github.com/user-attachments/assets/6b5a1d6a-8479-4482-b307-d46f2bb49907" />