error when trying to open the jupyter notebooks

Hi, I received this error when I downloaded the jupyter notebooks and tried to open it: Unreadable Notebook: directoryname\001_equal_weight_S&P_500.ipynb NotJSONError("Notebook does not appear to be JSON: '\\n\\n\\n\\n\\n\\n\\n<!DOCTYPE html>\\n<html la..."). May I know how to rectify it?