LibGit2Sharp.LibGit2SharpException: failed to parse supported auth schemes: The operation identifier is not valid

// code start
LibGit2Sharp.PullOptions options = new LibGit2Sharp.PullOptions();
options.FetchOptions = new FetchOptions();
options.FetchOptions.CredentialsProvider = new CredentialsHandler(
(url, usernameFromUrl, types) =>
new UsernamePasswordCredentials()
{
Username = _gitCredsUser,
Password = _gitCredsPassword
});

        // User information to create a merge commit
        var signature = new LibGit2Sharp.Signature(
            new Identity(_gitUsername, _gitEmail), DateTimeOffset.Now);

        // Pull
        Commands.Pull(repo, signature, options);

// end code

I am using LibGit2Sharp dll of 0.26.0.0, from last few days I am getting "failed to parse supported auth scheme" error while doing git pull. My git repository is on GITHUB. I am sure there might security related changes done on github side. that's why this error come.

Reproduction steps

Expected behavior

git pull should work without error.

Actual behavior

Version of LibGit2Sharp (release number or SHA1)

0.26.2

Operating system(s) tested; .NET runtime tested

windows 10

從 LibGit2Sharp 0.26.2 中顯示的 Commands.Pull 呼叫及其 FetchOptions/CredentialsHandler 設定開始，然後在 Windows 10 上針對 GitHub 重現驗證失敗。比較其中涉及的受支援驗證方案，並驗證使用所回報認證資訊的 pull 能夠在沒有剖析錯誤的情況下完成。