Exception when using KeyboardInteractiveAuthenticationMethod if account have no access to shell

I'm trying to use one of my servers as Socks5 proxy, for this purpose i've created special user with disabled shell access(default shell /sbin/nologin). On connect i got this error:

Message:
"String reference not set to an instance of a String. (Parameter 's')"
Stack trace:
" in Renci.SshNet.KeyboardInteractiveAuthenticationMethod.Authenticate(Session session)\n in Renci.SshNet.AuthenticationMethod.Renci.SshNet.IAuthenticationMethod.Authenticate(ISession session)\n in Renci.SshNet.ClientAuthentication.TryAuthenticate(ISession session, AuthenticationState authenticationState, String[] allowedAuthenticationMethods, SshAuthenticationException& authenticationException)\n in Renci.SshNet.ClientAuthentication.Authenticate(IConnectionInfoInternal connectionInfo, ISession session)\n in Renci.SshNet.ConnectionInfo.Authenticate(ISession session, IServiceFactory serviceFactory)\n in Renci.SshNet.Session.Connect()\n в Renci.SshNet.BaseClient.Connect()\n в test.TargetService.d__12.MoveNext() "

Partire da Renci.SshNet.KeyboardInteractiveAuthenticationMethod.Authenticate, utilizzando lo stack trace fornito e lo scenario dell'account nologin per riprodurre il problema. Determinare come si comporta l'autenticazione quando l'account non ha accesso alla shell; il lavoro è completato quando lo scenario non produce più l'eccezione relativa al parametro String segnalata e il comportamento risultante è coperto da un test di regressione.