brew services start mongodb-community@4.4 error

create a data/db in your home directory

1.cd /Users
2. cd to your home directory
3.mkdir data
4.cd data
5.mkdir db

6. mongod --dbpath ~/data/db press enter then just keep it running. 

from: https://www.mongodb.com/community/forums/t/error-couldnt-connect-to-server-127-0-0-1-27017/705/13