LibGit2Sharp.LibGit2SharpException: request failed with status code: 502

I have a repo that i am trying to push to remote, The repo is about 1.5GB, I am able to push from the terminal. I am able to initialize and push a repo using the following code.
I am thrown the following error LibGit2Sharp.LibGit2SharpException: request failed with status code: 502

var destRepoPath = @"D:\DP\T\Test85";
var stageOptionsWithIncludeIgnore = new StageOptions { IncludeIgnored = true };

using (var repo = new Repository(destRepoPath))
{
Commands.Stage(repo, "*", stageOptionsWithIncludeIgnore);
var origin = repo.Network.Remotes["origin"];
var pushRefSpec = "refs/heads/master";
repo.Network.Push(origin, pushRefSpec,
new PushOptions
{
CredentialsProvider = (url, user, cred) => new UsernamePasswordCredentials { Username = "Username", Password = "Password" }
});
}

Version of LibGit2Sharp: 1.0.235

I use VS 2017 and C# 4.5
Appreciate any help, thanks

Start with the shown Repository.Network.Push call and its PushOptions, then compare the LibGit2Sharp push against the terminal push for the 1.5GB repository. Check whether the 502 can be reproduced with LibGit2Sharp 1.0.235; done means identifying a library or remote-side cause and documenting the next action.