Can't start server

PS C:\Users\Allen\Desktop\Infinite> node app.js 6968
config.js doesn't exist - creating one with default settings...
Creating LoginServer object for http://play.pokemonshowdown.com/...
NEW GLOBAL: global
NEW CHATROOM: lobby
NEW CHATROOM: staff
Worker 1 now listening on 0.0.0.0:6968
Test your server at http://localhost:6968
{ [Error: Cannot find module '../build/Release/bson'] code: 'MODULE_NOT_FOUND' }
js-bson: Failed to load c++ bson extension, using pure JS version
MongoDB Connection Error. Make sure MongoDB is running.