JSONError: Unexpected token 'R' at 1:1 Route does not exist ^ - node.js

Question

I am getting the above error message in my Postman while setting up a new POST request using my heroku url as initial and current values in Globals.
Postman returns 'Route does not exist' and when I check the Postman console I get "JSONError: Unexpected token 'R' at 1:1 Route does not exist ^"
Postman worked fine up until now I am trying to use heroku with it. The POST request still works fine while the url is local://host/api/v1 ... however with heroku url is gives back that error message.
I don't know what I am doing wrong and I have been stuck since last week, help will be appreciated. Thank you
THIS IS MY app.js CODE
require('dotenv').config();
require('express-async-errors');
//extra security packages
const helmet = require('helmet')
const cors = require('cors')
const xss = require('xss-clean')
const rateLimiter = require('express-rate-limit')
const express = require('express');
const app = express();
//connecting dB
const connectDB = require('./db/connect')
const authenticateUser = require('./middleware/authentication')
//import routes
const authRouter = require('./routes/auth')
const jobsRouter = require('./routes/jobs')
// error handler
const notFoundMiddleware = require('./middleware/not-found');
const errorHandlerMiddleware = require('./middleware/error-handler');
app.set('trust proxy', 1)
//built in mW
app.use(
rateLimiter({
windowMs: 15 * 60 * 1000, //15 minutes
max: 100, //limit each IP to 100 request per wMs
})
);
app.use(express.json());
app.use(helmet());
app.use(cors());
app.use(xss());
// routes - full path
app.use('/api/v1/auth', authRouter)
app.use('/api/v1/jobs', authenticateUser, jobsRouter) //authUser is added to this route to prevent unauthorized access to the Jobs route and prevent editing
app.use(notFoundMiddleware);
app.use(errorHandlerMiddleware);
const port = process.env.PORT || 5000;
const start = async () => {
try {
await connectDB(process.env.MONGO_URI)
app.listen(port, () =>
console.log(`Server is listening on port ${port}...`)
);
} catch (error) {
console.log(error);
}
};
start();
THIS is my auth code
const User = require('../models/User')
const {StatusCodes} = require('http-status-codes')
const { BadRequestError, UnauthenticatedError } = require('../errors')
const register = async (req,res) => {
const user = await User.create({...req.body})//'{...req.body}' enables mongoose to do the user validation
const token = user.createJWT()
res
.status(StatusCodes.CREATED)
.json({user:{name:user.name}, token})
}
const login = async (req,res) => {
const {email,password} = req.body
if(!email || !password){
throw new BadRequestError('Please provide email and password')
}
const user = await User.findOne({email})
if(!user){
throw new UnauthenticatedError('Invalid Credentials')
}
const isPasswordCorrect = await user.comparePassword(password)
if(!isPasswordCorrect){
throw new UnauthenticatedError('Invalid Credentials')
}
const token = user.createJWT()
res
.status(StatusCodes.OK)
.json({user:{name:user.name},token})
}
module.exports = {
register,
login,
}
THIS is my routes code
const express = require('express')
const router = express.Router()
const {login,register} = require('../controllers/auth')
router.post('/register', register)
router.post('/login', login)
module.exports = router

Answer 1

I finally solved the challenge. This is what I did ::
I generated a new SSH public key from my computer terminal which I then linked to my heroku settings.
I then deleted the old app I had created in my heroku, cleared all existing git repos within my app terminal and quit the app. Restarted my computer and then started the heroku create and deploy app process again from the beginning. Now everything works fine.
The problem was not having an SSH linking key.
Thank you #Chris for your support.