An error occurred while pulling the image

当我登陆nvcr.io后尝试如下的指令:
#docker pull nvcr.io/nvidia/tlt-streamanalytics:v2.0_dp_py2
出现了如下的错误:
error pulling image configuration: Get https://d3c2pjnrr68kpx.cloudfront.net/registry/docker/registry/v2/blobs/sha256/49/496dcdfc093a63db6924b3c24a188294b5d1850b58f646c8f4f1502651bac039/data?Expires=1605249062&Signature=T1d9GxoK9VjzH5JZRaHMZ4KoZ889kbd0nkSUh9oM28NNIboov5jKKauNNG53YP-v~XSfSO~zO1kbNUDOApjsDCucgUwZpn0KbQJYppd8bb2tPbxhrt6rDiZgfRfKUMz3olBOehhLC06bpnsvxCfkdxC4dwEnz6lVbM3xHrVjbXl4xu61Enr0A4v78eXFRNPDfjkM2sRx9GBcVUGfbWec11UX9~8S29KxBiBdFyeUxkIH0QcqScjvTreCC9RoMHMo6BPUCdtWB1FErKN48kR9BKig2HyD8hX~~QUoXI4n2HOOjh75DoSs2J13ofEcEZahhs3DdyCbfcIzS9G5RPJ0Ng__&Key-Pair-Id=APKAJF5VNQ2FE23PGITA: dial tcp: lookup d3c2pjnrr68kpx.cloudfront.net: no such host

any idea?thanks.