We strongly recommend moving to V3 API as it provides more reliable builds and [security improvements](https://blog.nuget.org/20180810/Introducing-Repository-Signatures.html). The change is super simple: Replace `https://www.nuget.org/api/v2/` with `https://api.nuget.org/v3/index.json`
Signed-off-by: Jithin Jose <jijos@microsoft.com>