How to use the moleculer-web.Errors function in moleculer-web

"use strict";

const _ = require("lodash");
const ApiGateway = require("moleculer-web");
const { UnAuthorizedError } = ApiGateway.Errors;

module.exports = {
	name: "api",
	mixins: [ApiGateway],

	settings: {
		port: process.env.PORT || 3000,

		routes: [{
			path: "/api",

			authorization: true,

			aliases: {
				// Login
				"POST /users/login": "users.login",

"use strict";

const { ForbiddenError } = require("moleculer-web").Errors;
const DbService = require("moleculer-db");

module.exports = {
	name: "comments",
	mixins: [DbService],
	adapter: new DbService.MemoryAdapter({ filename: "./data/comments.db" }),

	/**
	 * Default settings
	 */
	settings: {
		fields: ["_id", "author", "article", "body", "createdAt", "updatedAt"],
		populates: {
			"author": {
				action: "users.get",
				params: {

"use strict";

const { MoleculerClientError } = require("moleculer").Errors;
const { ForbiddenError } = require("moleculer-web").Errors;

const _ = require("lodash");
const slug = require("slug");
const DbService = require("moleculer-db");

module.exports = {
	name: "articles",
	mixins: [DbService],
	adapter: new DbService.MemoryAdapter({ filename: "./data/articles.db" }),

	/**
	 * Default settings
	 */
	settings: {
		fields: ["_id", "title", "slug", "description", "body", "tagList", "createdAt", "updatedAt", "favorited", "favoritesCount", "author", "comments"],