Plot rendering error: Argument must be an image, collection, or ContourSet in this Axes; metadata = {'Entries': 976086, 'Name': 'OccupancyMap-15', 'Overflow': 0.0, 'Type': 'Histo2d', 'Underflow': 0.0, 'x': {'AxisTitle': 'Column', 'Bins': 400, 'High': 400.5, 'Low': 0.5}, 'y': {'AxisTitle': 'Row', 'Bins': 384, 'High': 384.5, 'Low': 0.5}, 'z': {'AxisTitle': 'Hits'}}