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() "

Comience en Renci.SshNet.KeyboardInteractiveAuthenticationMethod.Authenticate, utilizando el stack trace proporcionado y el escenario de la cuenta nologin para reproducir el fallo. Determine cómo se comporta la autenticación cuando la cuenta no tiene acceso al shell; se considera terminado cuando el escenario ya no produce la excepción de parámetro String indicada y su comportamiento resultante está cubierto por una prueba de regresión.