Postman unable to read the body - node.js

Question

The following code gives an Validation error whenever the post/get request is made using postman. The image is also provided at the end of the code please check that out to debug this code.
****//this is my index file code****
const express = require("express");
const app = express();
const bodyParser = require("body-parser");
const dotenv =require("dotenv");
const mongoose = require("mongoose");
//importing the routes file
const Authroute = require("./routes/auth");
dotenv.config();
//middlewear
app.use(bodyParser.urlencoded({extended: false}));
app.use(bodyParser.raw());
app.use("/api/users",Authroute);
//Connected to Db
mongoose.connect(process.env.Db_Connect,
{ useNewUrlParser: true, useUnifiedTopology: true }, () =>
{
console.log("connected to Db");
});
app.listen(4000, ()=> console.log("your system is up"));
**//this is auth file code**
const router = require("express").Router();
const Newposts =require("../Models/posts");
//post request
router.post("/register",async(req,res) =>
{
const com = new Newposts({
name:req.body.name,
email:req.body.email,
password:req.body.password,
});
try{
const savedUser = await com.save();
res.json(savedUser);
}
catch(err)
{
res.status(400).send(err);
}
});
module.exports = router;
error statement
"errors": {
"name": {
"name": "ValidatorError",
"message": "Path `name` is required.",
"properties": {
"message": "Path `name` is required.",
"type": "required",
"path": "name"
},
"kind": "required",
"path": "name"
},
"email": {
"name": "ValidatorError",
"message": "Path `email` is required.",
"properties": {
"message": "Path `email` is required.",
"type": "required",
"path": "email"
},
"kind": "required",
"path": "email"
},
"password": {
"name": "ValidatorError",
"message": "Path `password` is required.",
"properties": {
"message": "Path `password` is required.",
"type": "required",
"path": "password"
},
"kind": "required",
"path": "password"
}
},
"_message": "posts validation failed",
"name": "ValidationError",
"message": "posts validation failed: name: Path `name` is required., email: Path `email` is required., password: Path `password` is required."
}
posts file code
const mongoose =require("mongoose");
const NewUser = new mongoose.Schema({
name:{
type: String,
required:true,
min:6,
max:20
},
email:{
type: String,
required:true,
min:10,
max:200
},
password:{
type: String,
required:true,
min:6,
max:100
}
});
module.exports = mongoose.model("posts",NewUser);
[postman request link] Image
: https://i.stack.imgur.com/UiO74.png
Thank you for your time....