ERROR: Could not find migration method: up

Question

I have the up option filed in my seed file, but I couldn't find what the message exactly says. This error occurs when I run the command npx sequelize-cli db:seed:all As per the link here I added the .sequelizerc file as well but it throws same error. Why this error occurs and how to solve it ? I am a beginner in node js ORM, please help me resolve it. Thanks in advance.

Note: The data was added in the db as expected

demoUser.js

'use strict';
const Data = require('./data.js')
const data = new Data()

module.exports = {
  up: async (queryInterface, Sequelize) => {
    return queryInterface.bulkInsert('Users', [{
      firstName: "a",//data.getUserStats(),
      lastName: 'Doe',
      email: 'example@example.com',
      createdAt: new Date(),
      updatedAt: new Date()
    }]); 
  },

  down: async (queryInterface, Sequelize) => {
    return queryInterface.bulkDelete('Users', null, {});
  }
};

Full path to demoUser.js ../seeders/20200824140115-demo-user.js

.sequelizerc

const path = require('path');

module.exports = {
  'config': path.resolve('config', 'config.json'),
  'models-path': path.resolve('models'),
  'seeders-path': path.resolve('seeders'),
  'migrations-path': path.resolve('migrations')
};