View difference between Paste ID: WaCccAke and RxkqtirD

 //includes express, mongoose, User, constants. this part is ok.
 
 /**
  * Authenticates a user post request
  *
  * @request email string
  * @request password string
  *
  */
 router.post("/", (req, res) => {
     /**
      * Retrieve the user
      */
     User.find(
     {
         email: req.body.email
     },
     (err, user) =>
     {
         /**
          * An error occurred
          */
         if (err)
         {
             return res.json({
                 success:    false,
                 message:    "An mongodb error occurred.",
                 error:      err
             });
         }
 
         /**
          * Check for problems with the email or password.
          */
         if (!user)
         {
             return res.json({
                 success:    false,
                 message:    "Email or password was incorrect."
             });
         }
 
-		//ERROR
+		// ##########################################################
 		// ERROR
 		// user.verifyPassword(req.body.password, match => {
         //     ^
         // TypeError: user.verifyPassword is not a function
 		// ##########################################################
         user.verifyPassword(req.body.password, match => {
             if (!match)
             {
                 return res.json({
                     success:    false,
                     message:    "Email or password was incorrect."
                 });
             }
 
             /**
              * User authenticated!
              */
             req.session.user = user;
             res.json({
                 success: true,
                 message: "Successfully authenticated."
             });
         });
 
     });
 });
 
 router.get("/", (req, res, next) => {
     var admin = new User({
         name: "admin",
         email: "[email protected]",
         password: "admin",
         authorization: constants.authorization.admin
     });
 
 	// ########################################################
 	// ERROR
 	// if (!user.isModified("password"))
     //            ^
 	// TypeError: user.isModified is not a function
 	// #######################################################
     admin.save(function(err) {
         if (err)
         {
             console.log(err);
         }
 
         console.log('User saved successfully');
         res.json({ success: true });
     });
 });