pinglangao

``` from gluoncv.model_zoo import get_model get_model("yolo3_darknet53_custom", pretrained_base=True, classes=["test", "test2"]) ``` gets me ``` RuntimeError: Failed downloading url https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/gluon/models/darknet53-2189ea49.zip ``` Does this URL still work?