Getting Missing required parameter: scope Passport.js, express - node.js

Question

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:
const express = require("express");
const cors = require("cors");
const mongoose = require("mongoose");
const passport = require("passport");
const app = express();
const port = process.env.PORT || 3000;
require("dotenv").config();
require("./passport-setup")
app.use(passport.initialize())
app.use(passport.session())
app.get('/success', (req, res) => {
res.render("/profile.html")
})
app.get('/login', passport.authenticate('google', { scope: 'email' }));
app.get('/google/callback', passport.authenticate('google', { failureRedirect: '/failed' }),
function(req, res) {
// Successful authentication, redirect home.
res.redirect('/success');
}
);
passport config(relevant code):
const passport = require("passport");
const GoogleStrategy = require("passport-google-oauth2").Strategy
passport.use(new GoogleStrategy({
clientID: process.env.GOOGLE_CLIENT_ID,
clientSecret: process.env.GOOGLE_CLIENT_SECRET,
callbackURL: process.env.CALLBACK_URL,
passReqToCallback: true
},function(request,accessToken,refreshToken,profile,done){
console.log(profile)
return done(null, profile)
}
))
PS: I found this answer but i don't know what he means by 'JSON key'. Maybe the API updated.
Any help would be really appreciated.
Thanks in advance.
EDIT
The callback url I provided to google was not matching my `app.get`. Fixed.

Answer 1

PS: I found this answer but i don't know what he means by 'JSON
key' - the person referred to your GoogleStrategy which is A JSON
object contains zero, one, or more key-value pairs.
/* SECURE COOKIES TRUE MADE GOOGLE SIGN IN / SIGNUP WORK */
I was getting an error when trying to Sign in/up with Google account: Missing required parameter: scope and the following lines of code added before app.use(passport.initialize()); made it work!
if (app.get("env") === "production") {
app.set("trust proxy", 1);
session.cookie.secure = true;
}
You might have to implement express-session to make this work (check the npm website for docs on how to use) but simply declare at the top:
const session = require("express-session");
before app.use(passport.initialize()) add this lines:
app.use(
session({
secret: process.env.SESSION_SECRET,
resave: false,
saveUninitialized: false,
cookie: {},
})
);

Answer 2

My callback URL was http:localhost:3000/google/callback
Setting it to /gooogle/callback worked for me.