scala - Multiple Collections ReactiveMongo -

i trying create multiple collections in mongodb using reactivemongo driver in play framework.

i using following configurations:

application.conf: mongodb.uri = "mongodb://localhost:27017/somedb"  

in controllers class:

def usercollection = reactivemongoapi.db.collection[bsoncollection]("user") 

(i want store user info in collection). code works fine till here. when try add collection in want store form data of different format.

def formcollection = reactivemongoapi.db.collection[bsoncollection("form") 

and when run code, following error:

reactivemongo.core.errors.connectionnotinitialized: mongoerror['connection missing metadata (like protocol version, etc.) connection pool being initialized

how achieve ??