Cube MongoBi

Problem :-
I am now getting an error when trying to connect the Mongo B connector

security:
enabled: true
defaultMechanism: default
defaultSource: admin

mongodb:
net:
uri: MongoUrl
auth:
username: MongoUser
password: MongoPass

net:
bindIp: localhost
port: 3307
ssl:
mode: "allowSSL"
PEMKeyFile: "/mongo.pem"

env : -

# Cube.js environment variables: https://cube.dev/docs/reference/environment-variables
CUBEJS_DEV_MODE=true
CUBEJS_DB_TYPE=mongobi
CUBEJS_API_SECRET=9c7a834d9be0cd2fb4e7b86a88a2bd1368ffbc614dcf8fa8f836933b00d00c6916fa83b074c66a2b26579266edc93e0e1990b1271f6214ee799dc08b05b6a097
CUBEJS_EXTERNAL_DEFAULT=true
CUBEJS_SCHEDULED_REFRESH_DEFAULT=true
CUBEJS_WEB_SOCKETS=true
CUBEJS_DB_HOST=localhost
CUBEJS_DB_NAME=MongoDbName
CUBEJS_DB_USER=mongoUserName
CUBEJS_DB_PASSWORD=MongoPassword
CUBEJS_DB_PORT=3307
CUBEJS_DEV_MODE=true
CUBEJS_REFRESH_WORKER=true
port=4242
CUBEJS_DB_SSL=true
#CUBEJS_DB_SSL_CA=
#CUBEJS_DB_SSL_CERT=
#CUBEJS_DB_SSL_CIPHERS=
#CUBEJS_DB_SSL_PASSPHRASE=
CUBEJS_DB_SSL_REJECT_UNAUTHORIZED=false

error is : -

Access denied for user mongoUserName .............