nodebb could not connect to your mongo database mongo!

[FreshPrince]

I keep getting this error when i finish my ./nodebb setup im on centOS linux 64 bit

nodebb could not connect to your mongo database mongo returned the following error: auth failed
then the setup just gets aborted and when i do sudo service mongod start , or stop it just returns failed... heres the Mongo start failed , stop failed Mongo failed
and here is the error i get when i do the nodebb setup nodebb setup error any help would be great

[yaozixin13]

@FreshPrince Whether a role management library has been created？