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

Inizia con la chiamata mostrata a Commands.Pull e la relativa configurazione di FetchOptions/CredentialsHandler in LibGit2Sharp 0.26.2, quindi riproduci il fallimento dell'autenticazione su Windows 10 verso GitHub. Confronta gli schemi di autenticazione supportati coinvolti e verifica che un pull eseguito usando le credenziali indicate venga completato senza l'errore di parsing.