Added image (logo) disappears from plot when saved offline as PNG using Orca

Hi,

I have created a Gantt chart in plotly and added a company logo to the top right corner. The logo appears correctly in my Jupyter notebook and also appears correctly if I click the button to download plot as a png. However, if I try to save my image in the following code (using orca) it excludes the image. How can I get the image to stay??

plotly.offline.init_notebook_mode(connected=True)
import os
import plotly.io as pio

fig = ff.create_gantt(df, index_col='Resource', show_colorbar=True, width=1200, group_tasks=True, title='SUMA Landfill ESA',
                      showgrid_x=True, showgrid_y=True)
fig['layout'].update(xaxis=dict(nticks=40, showline=True, mirror=True, tickangle=70), yaxis=dict(showline=True, mirror=True),
                     legend=dict(traceorder='reversed'))
fig['layout'].update(images=[dict(source='logo left aligned.jpg',
                   x=1.33,
                   y=1,
                   xanchor='right',
                   yanchor='bottom',
            sizex=0.4,
            sizey=0.4)])

pio.write_image(fig, 'gantt_suma.png', scale=3)

fig.show()