First example in the README not working when using m.render() with zoom >= 20 (it was working until some weeks ago) #35
Description
The first example in the README
from staticmap import StaticMap, Line
m = StaticMap(300, 400, 10)
m.add_line(Line(((13.4, 52.5), (2.3, 48.9)), 'blue', 3))
image = m.render()
image.save('map.png')
does not work when m.render() is called using zoom >= 20.
For example this does not work
m = StaticMap(300, 400, 10)
m.add_line(Line(((13.4, 52.5), (2.3, 48.9)), 'blue', 3))
image = m.render(zoom=20)
image.save('map.png')
but this does work
from staticmap import StaticMap, Line
m = StaticMap(300, 400, 10)
m.add_line(Line(((13.4, 52.5), (2.3, 48.9)), 'blue', 3))
image = m.render(zoom=19)
image.save('map.png')
When using zoom >= 20 an error is shown saying request failed [400]: https://a.tile.openstreetmap.org/20/547152/352422.png although it was working until a few weeks ago.
Is the issue related to issue 33? Is there any workaround to this issue?