On WSL, I executed sudo zypper update, but I got this error message. Loading repository data... Warning: Repository 'oss_update' appears to be outdated. Consider using a different mirror or server. Reading installed packages... Nothing to do. When I executed sudo zypper refresh, I didn't get any error message, though. Retrieving repository 'The Go Programming Language (openSUSE_Leap_42.3)' metadat
![Why do I get "Warning: Repository 'oss_update' appears to be outdated. Consider using a different mirror or server."?](https://cdn-ak-scissors.b.st-hatena.com/image/square/b464c2cda694ab68f456c208dff3f30700a47c13/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Funix%2FImg%2Fapple-touch-icon%402.png%3Fv%3D32fb07f7ce26)