title: after upgrate to Bokeh 2.1.1 Figure is not displaying on Web Site
body: <blockquote>
  <p>Blockquote
  from bokeh.io import output_file
  from bokeh.plotting import figure, show</p>
  </blockquote>
  <pre><code>x = [1, 2, 1]
  y = [1, 1, 2]
  </code></pre>
  <p>output_file('first_glyphs.html', title='First Glyphs')</p>
  <pre><code>fig = figure(title='My Coordinates',
           plot_height=300, plot_width=300,
           x_range=(0, 3), y_range=(0, 3),
           toolbar_location=None)
  fig.circle(x=x, y=y,
         color='green', size=10, alpha=0.5)
  show(fig)
  </code></pre>