Curl: (22) The requested URL returned error: 404 Not Found

When i am using nexus-coccoapods-repository to proxy my third-party lib. It looks like the api https/api.github.com/ is not that stable, when i pod install some pod like GDPerformanceView,Gzip , they throw the error log below. Do you have any ideas? Best thanks

[!] Error installing GDPerformanceView-Swift
[!] /usr/bin/curl -f -L -o /var/folders/z8/gv7_svc93fs2d6xyk931vh7c0000gp/T/d20200330-26504-nm6j90/file.tgz http://xxx.xxx.xxx.xx:x8081/repository/cocoapods-proxy/pods/GDPerformanceView-Swift/2.0.3/https/api.github.com/repos/dani-gavrilov/GDPerformanceView-Swift/tarball/2.0.3.tar.gz --create-dirs --netrc-optional --retry 2

% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:–:-- --:–:-- --:–:-- 0
curl: (22) The requested URL returned error: 404 Not Found