Would you mind to help me?

My knowledge was sufficient to get your mod running on FS25 but not to fix this lua error (lua:440: attempt to call a nill value).

<img width="1417" height="400" alt="Image" src="https://github.com/user-attachments/assets/19de8fee-3bac-4970-9c9d-bc4299a7f9aa" />

I would appreciate your help to get this very helpful mod running. 