Общий нуб здесь. Я пытался настроить пример приложения узла, но при каждом запуске появляется следующая ошибка:

приложение узла

Failed to load c++ bson extension, using pure JS version

events.js:72
        throw er; // Unhandled 'error' event
              ^
Error: failed to connect to [#$%67890 :27017]
    at null.<anonymous> (/home/thejazeto/code/nodejs/authen/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/server.js:553:74)
    at EventEmitter.emit (events.js:106:17)
    at null.<anonymous> (/home/thejazeto/code/nodejs/authen/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/connection_pool.js:140:15)
    at EventEmitter.emit (events.js:98:17)
    at Socket.<anonymous> (/home/thejazeto/code/nodejs/authen/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/connection.js:512:10)
    at Socket.EventEmitter.emit (events.js:95:17)
    at net.js:830:16
    at process._tickCallback (node.js:415:13)