Unhandled exception. MongoDB.Driver.MongoAuthenticationException: Unable to authenticate using sasl protocol mechanism MONGODB-AWS.
 ---> MongoDB.Driver.MongoCommandException: Command saslContinue failed: Authentication failed..
   at MongoDB.Driver.Core.WireProtocol.CommandUsingQueryMessageWireProtocol`1.ProcessReply(ConnectionId connectionId, ReplyMessage`1 reply)
   at MongoDB.Driver.Core.WireProtocol.CommandUsingQueryMessageWireProtocol`1.Execute(IConnection connection, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Authentication.SaslAuthenticator.Authenticate(IConnection connection, ConnectionDescription description, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
   at MongoDB.Driver.Core.Connections.BinaryConnection.OpenHelper(CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Connections.BinaryConnection.Open(CancellationToken cancellationToken)
   at MongoDB.Driver.Core.ConnectionPools.ExclusiveConnectionPool.PooledConnection.Open(CancellationToken cancellationToken)
   at MongoDB.Driver.Core.ConnectionPools.ExclusiveConnectionPool.AcquiredConnection.Open(CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Servers.Server.GetChannel(CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Bindings.ServerChannelSource.GetChannel(CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Bindings.ChannelSourceHandle.GetChannel(CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Operations.DropCollectionOperation.Execute(IWriteBinding binding, CancellationToken cancellationToken)
   at MongoDB.Driver.OperationExecutor.ExecuteWriteOperation[TResult](IWriteBinding binding, IWriteOperation`1 operation, CancellationToken cancellationToken)
   at MongoDB.Driver.MongoDatabaseImpl.ExecuteWriteOperation[T](IClientSessionHandle session, IWriteOperation`1 operation, CancellationToken cancellationToken)
   at MongoDB.Driver.MongoDatabaseImpl.DropCollection(IClientSessionHandle session, String name, CancellationToken cancellationToken)
   at MongoDB.Driver.MongoDatabaseImpl.<>c__DisplayClass29_0.<DropCollection>b__0(IClientSessionHandle session)
   at MongoDB.Driver.MongoDatabaseImpl.UsingImplicitSession(Action`1 func, CancellationToken cancellationToken)
   at MongoDB.Driver.MongoDatabaseImpl.DropCollection(String name, CancellationToken cancellationToken)
   at tour.Program.Main(String[] args) in /home/vagrant/dotnet/tour/csharp/Program.cs:line 20