Running Locally - NoneType Object error

Awesome repo! Trying to get this working locally, but I'm not great with python. Did the install with pip, and then created a circle.py file with the following (from the first example). When I run circle.py I get an error on line 1, import vsketch, TypeError: 'NoneType' object is not callable. Any idea what could be wrong? Thanks!

import vsketch
from prettymaps import *
import matplotlib.font_manager as fm
from matplotlib import pyplot as plt
# Init matplotlib figure
fig, ax = plt.subplots(figsize = (12, 12), constrained_layout = True)

backup = plot(
    # Address:
    'Praça Ferreira do Amaral, Macau',
    # Plot geometries in a circle of radius:
    radius = 1100,
    # Matplotlib axis
    ax = ax,
    # Which OpenStreetMap layers to plot and their parameters:
    layers = {
            # Perimeter (in this case, a circle)
            'perimeter': {},
            # Streets and their widths
            'streets': {
                'width': {
                    'motorway': 5,
                    'trunk': 5,
                    'primary': 4.5,
                    'secondary': 4,
                    'tertiary': 3.5,
                    'residential': 3,
                    'service': 2,
                    'unclassified': 2,
                    'pedestrian': 2,
                    'footway': 1,
                }
            },
            # Other layers:
            #   Specify a name (for example, 'building') and which OpenStreetMap tags to fetch
            'building': {'tags': {'building': True, 'landuse': 'construction'}, 'union': False},
            'water': {'tags': {'natural': ['water', 'bay']}},
            'green': {'tags': {'landuse': 'grass', 'natural': ['island', 'wood'], 'leisure': 'park'}},
            'forest': {'tags': {'landuse': 'forest'}},
            'parking': {'tags': {'amenity': 'parking', 'highway': 'pedestrian', 'man_made': 'pier'}}
        },
        # drawing_kwargs:
        #   Reference a name previously defined in the 'layers' argument and specify matplotlib parameters to draw it
        drawing_kwargs = {
            'background': {'fc': '#F2F4CB', 'ec': '#dadbc1', 'hatch': 'ooo...', 'zorder': -1},
            'perimeter': {'fc': '#F2F4CB', 'ec': '#dadbc1', 'lw': 0, 'hatch': 'ooo...',  'zorder': 0},
            'green': {'fc': '#D0F1BF', 'ec': '#2F3737', 'lw': 1, 'zorder': 1},
            'forest': {'fc': '#64B96A', 'ec': '#2F3737', 'lw': 1, 'zorder': 1},
            'water': {'fc': '#a1e3ff', 'ec': '#2F3737', 'hatch': 'ooo...', 'hatch_c': '#85c9e6', 'lw': 1, 'zorder': 2},
            'parking': {'fc': '#F2F4CB', 'ec': '#2F3737', 'lw': 1, 'zorder': 3},
            'streets': {'fc': '#2F3737', 'ec': '#475657', 'alpha': 1, 'lw': 0, 'zorder': 3},
            'building': {'palette': ['#FFC857', '#E9724C', '#C5283D'], 'ec': '#2F3737', 'lw': .5, 'zorder': 4},
        }
)

marceloprates / prettymaps

Running Locally - NoneType Object error #9