Hi! I found that the urls of two images in the `test_controlnet.py` don't work from today ([iceburg](https://github.com/linden-li/collage-diffusion-ui/blob/main/backend/test_controlnet.py#L32) [deer](https://github.com/linden-li/collage-diffusion-ui/blob/main/backend/test_controlnet.py#L49)) Can you help to check on this? Thanks! 
Hi!
I found that the urls of two images in the
test_controlnet.pydon't work from today (iceburg deer)Can you help to check on this? Thanks!