在线升级失败，求指导

plugin: updating: unRAIDServer.plg
plugin: downloading: https://unraid-dl.sfo2.cdn.digitaloceanspaces.com/stable/unRAIDServer-6.11.5-x86_64.zip ... done
plugin: downloading: https://unraid-dl.sfo2.cdn.digitaloceanspaces.com/stable/unRAIDServer-6.11.5-x86_64.md5 ... failed (Network failure)
plugin: https://unraid-dl.sfo2.cdn.digitaloceanspaces.com/stable/unRAIDServer-6.11.5-x86_64.md5 download failure (Network failure)