[Python] Turtle not working on Python in PyCharm for Mac - screen just flickers before error...

I am trying to use Turtle using the code below but when the window pops up nothing happens and screen.exitonclick() also doesn't work. The screen just flickers for a few seconds and stops. Any ideas?

from turtle import Turtle, Screen

timmy_the_turtle = Turtle()
timmy_the_turtle.shape("turtle")
timmy_the_turtle.color("red")
timmy_the_turtle.forward(100)
timmy_the_turtle.right(90)

screen = Screen()
screen.exitonclick()


I am then getting the following errors:

Traceback (most recent call last):
File "/Users/Work/PycharmProjects/Day18/main.py", line 5, in <module>
timmy_the_turtle.color("red")
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/turtle.py", line 2217, in color
pcolor = self._colorstr(pcolor)
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/turtle.py", line 2697, in _colorstr
return self.screen._colorstr(args)
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/turtle.py", line 1159, in _colorstr
raise TurtleGraphicsError("bad color string: %s" % str(color))
turtle.TurtleGraphicsError: bad color string: red

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