the plot should look like this: <img width="672" height="390" alt="Image" src="https://github.com/user-attachments/assets/87326cba-6267-4a01-af4b-277a0b4176de" /> Getting this error: <img width="1100" height="201" alt="Image" src="https://github.com/user-attachments/assets/b999ab0b-fe72-4765-bada-fa5511f7ab3f" /> Console error shows: <img width="1023" height="280" alt="Image" src="https://github.com/user-attachments/assets/fcd5d140-2dcb-4677-8003-15c377a26d84" />
