Getting Error when trying to CREATE a converted Data frame to a CSV file

I'm trying to create a CSV file from a database. All the files are in the same directory. I have this code:

import pandasdata = pandas.read_csv("2018_Central_Park_Squirrel_Census_-_Squirrel_Data.csv")grey_squirrels_count = len(data[data["Primary Fur Color"] == "Gray"])red_squirrels_count = len(data[data["Primary Fur Color"] == "Cinnamon"])black_squirrels_count = len(data[data["Primary Fur Color"] == "Black"])print(grey_squirrels_count)print(red_squirrels_count)print(black_squirrels_count)data_dict = {"Fur Color": ["Gray", "Cinnamon", "Black"],"Count": [grey_squirrels_count, red_squirrels_count, black_squirrels_count]}print(data_dict)df = pandas.DataFrame(data_dict)print(df)df.to_csv("squirrel_count.csv")

But I get this error:

What is wrong, and how do I fix it?