Warnings about not being a widget

[kcinickgx]

the program works fine, but annoying warning in the start

speedometer -i 0.1 -r KCINET -t KCINET

/usr/bin/speedometer.py:226: ColumnsWarning: <speedometer.SpeedGraph object at 0x7f1650ee19d0> is not a Widget
d = GraphDisplay(tap, smoothed)
/usr/bin/speedometer.py:226: ColumnsWarning: <speedometer.SpeedGraph object at 0x7f1650f04510> is not a Widget
d = GraphDisplay(tap, smoothed)
/usr/lib/python3.11/site-packages/urwid/widget/widget.py:112: ColumnsWarning: <speedometer.SpeedGraph object at 0x7f1650ee19d0> is not Widget.
canv = fn(self, size, focus=focus)
/usr/lib/python3.11/site-packages/urwid/widget/widget.py:112: ColumnsWarning: <speedometer.SpeedGraph object at 0x7f1650f04510> is not Widget.
canv = fn(self, size, focus=focus)