TypeError: 'WrappedObject' object is not callable

Get TypeError: ‘WrappedObject’ object is not callable

Code:
import plotly.graph_objects as go

  fig = go.Figure(go.Indicator(
    domain = {'x': [0, 1], 'y': [0, 1]},
    value = 100,
    mode = "gauge+number",
    title = {'text': "guess here"},
    #delta = {'reference': 380},
    gauge = {'axis': {'range': [None, 100]},
         'steps' : [
             {'range': [0, self.r_bottom], 'color': "lightgray"},
             {'range': [self.r_bottom, self.r_top], 'color': "gray"}],
         'threshold' : {'line': {'color': "red", 'width': 4}, 'thickness': 0.75, 'value': 490}}))

  fig.show()