NODEJS/MONGODB - Help with issue regarding deployment of mongoose database and check if deployment is complete

I am looking for someone who can help me deploy nodejs and mongoose database on firebase functions. I am getting some errors that I am unable to resolve while trying to deploy it. We will schedule a google meet call if agreed and steps need to be provided by you to deploy the functions. If someone can please help me resolve this you can find initial details regarding the project and one error in the below link :

https://stackoverflow.com/questions/73932439/getting-error-mongooseserverselectionerror-connect-econnrefused-127-0-0-127017