passport-google-oauth2 | Google authentication strategy for Passport and Node.js | Authentication library

i have a huge problem with my project in react. I'm trying to update the libraries on my project but seems something wrong happens.

This is the package.json

I am having trouble with the auth for my app. When sending a POST request to from the client with information from a form in the signup component, I receive the following error in my console:

Created on MongoDB/Atlas database system. I successfully run my app locally but when I push the app to Heroku i get an application error message which is:

Application error

An error occurred in the application and your page could not be served. If you are the application owner, check your logs for details. You can do this from the Heroku CLI with the command

heroku logs --tail

When I look at the logs:

I need to have authentication using Google oauth2 with Passport Js in order to get user's email, despite setting CORS in backend and setting 'allow origin' in Axios I still get this error :

I am new to node.js and am currently working on my first project. While using passport.js for OAuth it is giving me

Im using Passport.js with express in my app to login with Google Oauth. But when i try to sign in, i get the following error: invalid parameter value for redirect_uri: Missing authority: http:localhost:3000/google/callback from which when i access localhost:3000/google/callback, i get Missing required parameter: scope. The relevant code:

I'm trying to login using Google auth but,for some reason after I click on an account I keep getting an error "ERROR GET /auth/google/callback TokenError: Unauthorized" after I try to authenticate using Google Oauth,how can I fix this?

here's my App.js

I am having trouble deleting items from an array that is inside the User schema then when i try to save the document it gives me this error?

Here is the error:

I am using Passport js in Express for authenticating user with Google. I am using Passport for oauth servicing and passport-google-oauth20 for GoogleStrategy and i am using Express for server side. So following is my code ....