Question looks long winded - it's not!
I'm using Angular Universal to implement SSR, following this tutorial. Universal/express-engine is installed, main.js is generated in the dist/projectname/server folder, and I've created a prerender.js folder in the project root.
When I try npm run prerender it starts work prerendering until eventually hitting the following error:
Prerendering 5 route(s) to C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\browser
(node:27236) UnhandledPromiseRejectionWarning: Error: No NgModule metadata found for 'class{}'.
at NgModuleResolver.resolve (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:628845)
at CompileMetadataResolver.getNgModuleMetadata (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:603430)
at JitCompiler._loadModules (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:672203)
at JitCompiler._compileModuleAndComponents (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:671712)
at JitCompiler.compileModuleAsync (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:670635)
at useClass.compileModuleAsync (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:2063708)
at compileNgModuleFactory__PRE_R3__ (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:1372200)
at PlatformRef.bootstrapModule (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:1376714)
at renderModule (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:2085795)
at C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\node_modules\@nguniversal\builders\src\prerender\render.js:66:32
(node:27236) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:28592) UnhandledPromiseRejectionWarning: Error: No NgModule metadata found for 'class{}'.
at NgModuleResolver.resolve (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:628845)
at CompileMetadataResolver.getNgModuleMetadata (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:603430)
at JitCompiler._loadModules (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:672203)
at JitCompiler._compileModuleAndComponents (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:671712)
at JitCompiler.compileModuleAsync (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:670635)
at useClass.compileModuleAsync (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:2063708)
at compileNgModuleFactory__PRE_R3__ (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:1372200)
at PlatformRef.bootstrapModule (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:1376714)
at renderModule (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:2085795)
at C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\node_modules\@nguniversal\builders\src\prerender\render.js:66:32
(node:1236) UnhandledPromiseRejectionWarning: Error: No NgModule metadata found for 'class{}'.
at NgModuleResolver.resolve (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:628845)
at CompileMetadataResolver.getNgModuleMetadata (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:603430)
at JitCompiler._loadModules (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:672203)
at JitCompiler._compileModuleAndComponents (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:671712)
at JitCompiler.compileModuleAsync (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:670635)
at useClass.compileModuleAsync (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:2063708)
at compileNgModuleFactory__PRE_R3__ (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:1372200)
at PlatformRef.bootstrapModule (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:1376714)
at renderModule (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:2085795)
at C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\node_modules\@nguniversal\builders\src\prerender\render.js:66:32
(node:27236) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
(node:28592) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:1236) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:29420) UnhandledPromiseRejectionWarning: Error: No NgModule metadata found for 'class{}'.
at NgModuleResolver.resolve (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:628845)
at CompileMetadataResolver.getNgModuleMetadata (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:603430)
at JitCompiler._loadModules (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:672203)
at JitCompiler._compileModuleAndComponents (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:671712)
at JitCompiler.compileModuleAsync (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:670635)
at useClass.compileModuleAsync (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:2063708)
at compileNgModuleFactory__PRE_R3__ (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:1372200)
at PlatformRef.bootstrapModule (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:1376714)
at renderModule (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:2085795)
at C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\node_modules\@nguniversal\builders\src\prerender\render.js:66:32
(node:32908) UnhandledPromiseRejectionWarning: Error: No NgModule metadata found for 'class{}'.
at NgModuleResolver.resolve (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:628845)
at CompileMetadataResolver.getNgModuleMetadata (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:603430)
at JitCompiler._loadModules (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:672203)
at JitCompiler._compileModuleAndComponents (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:671712)
at JitCompiler.compileModuleAsync (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:670635)
at useClass.compileModuleAsync (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:2063708)
at compileNgModuleFactory__PRE_R3__ (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:1372200)
at PlatformRef.bootstrapModule (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:1376714)
at renderModule (C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\dist\comspace\server\main.js:1:2085795)
at C:\Users\user\Documents\Personal_Web_Projects\comspace.com\comspace0.3\comspace\node_modules\@nguniversal\builders\src\prerender\render.js:66:32
(node:28592) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
(node:1236) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
(node:29420) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:32908) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:29420) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
(node:32908) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
Pre-render the HTML of our main HTML route , and output it to a text file.
This: delete the chained .catch(err...) function of the bootstrap in main.ts - same error
This: delete node-modules, package.json, run npm install, ng build, ng serve - same error, also package.json didn't regenerate like the answer suggested and I thought I nuked my app
This: Update AngularCLI and Webpack - same error
Angular CLI: 10.0.0
Node: 12.16.3
OS: win32 x64
Angular: 10.0.0
... animations, cli, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, platform-server
... router
Ivy Workspace: <error>
Package Version
-----------------------------------------------------------
@angular-devkit/architect 0.900.7
@angular-devkit/build-angular 0.901.9
@angular-devkit/build-optimizer 0.901.9
@angular-devkit/build-webpack 0.901.9
@angular-devkit/core 9.0.7
@angular-devkit/schematics 10.0.0
@angular/cdk 9.2.4
@angular/fire 6.0.2
@ngtools/webpack 9.1.9
@nguniversal/builders 9.1.1
@nguniversal/common 9.1.1
@nguniversal/express-engine 9.1.1
@schematics/angular 10.0.0
@schematics/update 0.1000.0
rxjs 6.5.5
typescript 3.9.5
webpack 4.43.0
import 'zone.js/dist/zone-node';
import 'reflect-metadata';
import {renderModuleFactory} from '@angular/platform-server';
import {writeFileSync} from 'fs';
const {AppServerModuleNgFactory} = require('./dist/comspace/server/main');
renderModuleFactory(AppServerModuleNgFactory, {
document: '<app-root></app-root>',
url: '/'
})
.then(html => {
console.log('Pre-rendering successful, saving prerender.html');
writeFileSync('./prerender.html', html);
})
.catch(error => {
console.error('Error occurred:', error);
});
import 'zone.js/dist/zone-node';
import { ngExpressEngine } from '@nguniversal/express-engine';
import * as express from 'express';
import { join } from 'path';
import { AppServerModule } from './src/main.server';
import { APP_BASE_HREF } from '@angular/common';
import { existsSync } from 'fs';
// The Express app is exported so that it can be used by serverless Functions.
export function app() {
const server = express();
const distFolder = join(process.cwd(), 'dist/comspace/browser');
const indexHtml = existsSync(join(distFolder, 'index.original.html')) ? 'index.original.html' : 'index';
// Our Universal express-engine (found @ https://github.com/angular/universal/tree/master/modules/express-engine)
server.engine('html', ngExpressEngine({
bootstrap: AppServerModule,
}));
server.set('view engine', 'html');
server.set('views', distFolder);
// Example Express Rest API endpoints
// server.get('/api/**', (req, res) => { });
// Serve static files from /browser
server.get('*.*', express.static(distFolder, {
maxAge: '1y'
}));
// All regular routes use the Universal engine
server.get('*', (req, res) => {
res.render(indexHtml, { req, providers: [{ provide: APP_BASE_HREF, useValue: req.baseUrl }] });
});
return server;
}
function run() {
const port = process.env.PORT || 4000;
// Start up the Node server
const server = app();
server.listen(port, () => {
console.log(`Node Express server listening on http://localhost:${port}`);
});
}
// Webpack will replace 'require' with '__webpack_require__'
// '__non_webpack_require__' is a proxy to Node 'require'
// The below code is to ensure that the server is run only when not requiring the bundle.
declare const __non_webpack_require__: NodeRequire;
const mainModule = __non_webpack_require__.main;
const moduleFilename = mainModule && mainModule.filename || '';
if (moduleFilename === __filename || moduleFilename.includes('iisnode')) {
run();
}
export * from './src/main.server';
import { enableProdMode } from '@angular/core';
import { environment } from './environments/environment';
if (environment.production) {
enableProdMode();
}
export { AppServerModule } from './app/app.server.module';
export { renderModule, renderModuleFactory } from '@angular/platform-server';
{
"extends": "./tsconfig.app.json",
"compilerOptions": {
"outDir": "./out-tsc/app-server",
"module": "commonjs",
"types": [
"node"
]
},
"files": [
"src/main.server.ts",
"server.ts"
],
"angularCompilerOptions": {
"entryModule": "./src/app/app.server.module#AppServerModule"
}
}
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"comspace": {
"projectType": "application",
"schematics": {},
"root": "",
"sourceRoot": "src",
"prefix": "app",
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "dist/comspace/browser",
"index": "src/index.html",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.app.json",
"aot": true,
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.scss",
"node_modules/bootstrap/dist/css/bootstrap.min.css",
"node_modules/bootstrap/dist/js/bootstrap.bundle.min.js",
"node_modules/@fortawesome/fontawesome-free/css/all.css",
"node_modules/ngx-sharebuttons/themes/circles/circles-dark-theme.scss"
],
"scripts": [
"node_modules/jquery/dist/jquery.min.js"
]
},
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true,
"budgets": [
{
"type": "initial",
"maximumWarning": "2mb",
"maximumError": "5mb"
},
{
"type": "anyComponentStyle",
"maximumWarning": "6kb",
"maximumError": "10kb"
}
]
}
}
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"options": {
"browserTarget": "comspace:build"
},
"configurations": {
"production": {
"browserTarget": "comspace:build:production"
}
}
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "comspace:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"main": "src/test.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.spec.json",
"karmaConfig": "karma.conf.js",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.css"
],
"scripts": []
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": [
"tsconfig.app.json",
"tsconfig.spec.json",
"e2e/tsconfig.json"
],
"exclude": [
"**/node_modules/**"
]
}
},
"e2e": {
"builder": "@angular-devkit/build-angular:protractor",
"options": {
"protractorConfig": "e2e/protractor.conf.js",
"devServerTarget": "comspace:serve"
},
"configurations": {
"production": {
"devServerTarget": "comspace:serve:production"
}
}
},
"deploy": {
"builder": "@angular/fire:deploy",
"options": {}
},
"server": {
"builder": "@angular-devkit/build-angular:server",
"options": {
"outputPath": "dist/comspace/server",
"main": "server.ts",
"tsConfig": "tsconfig.server.json"
},
"configurations": {
"production": {
"outputHashing": "media",
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"sourceMap": false,
"optimization": true
}
}
},
"serve-ssr": {
"builder": "@nguniversal/builders:ssr-dev-server",
"options": {
"browserTarget": "comspace:build",
"serverTarget": "comspace:server"
},
"configurations": {
"production": {
"browserTarget": "comspace:build:production",
"serverTarget": "comspace:server:production"
}
}
},
"prerender": {
"builder": "@nguniversal/builders:prerender",
"options": {
"browserTarget": "comspace:build:production",
"serverTarget": "comspace:server:production",
"routes": [
"/"
]
},
"configurations": {
"production": {}
}
}
}
}
},
"defaultProject": "comspace"
}
{
"name": "comspace",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e",
"dev:ssr": "ng run comspace:serve-ssr",
"serve:ssr": "node dist/comspace/server/main.js",
"build:ssr": "ng build --prod && ng run comspace:server:production",
"prerender": "ng run comspace:prerender"
},
"private": true,
"dependencies": {
"@angular/animations": "~9.1.7",
"@angular/cdk": "^9.2.4",
"@angular/common": "~9.1.7",
"@angular/compiler": "~9.1.7",
"@angular/core": "~9.1.7",
"@angular/fire": "^6.0.0",
"@angular/forms": "~9.1.7",
"@angular/platform-browser": "~9.1.7",
"@angular/platform-browser-dynamic": "~9.1.7",
"@angular/platform-server": "~9.1.7",
"@angular/router": "~9.1.7",
"@fortawesome/angular-fontawesome": "^0.6.1",
"@fortawesome/fontawesome-free": "^5.13.1",
"@fortawesome/fontawesome-svg-core": "^1.2.29",
"@fortawesome/free-brands-svg-icons": "^5.13.1",
"@fortawesome/free-regular-svg-icons": "^5.13.0",
"@fortawesome/free-solid-svg-icons": "^5.13.1",
"@nguniversal/express-engine": "^9.1.1",
"angular-font-awesome": "^3.1.2",
"bootstrap": "^4.5.0",
"express": "^4.15.2",
"jquery": "^3.5.1",
"mdbootstrap": "^4.19.0",
"ngx-sharebuttons": "^8.0.0",
"rxjs": "~6.5.4",
"tslib": "^1.10.0",
"zone.js": "~0.10.2"
},
"devDependencies": {
"@angular-devkit/build-angular": "~0.901.6",
"@angular/cli": "~9.1.6",
"@angular/compiler-cli": "~9.1.7",
"@nguniversal/builders": "^9.1.1",
"@types/express": "^4.17.0",
"@types/jasmine": "~3.5.0",
"@types/jasminewd2": "~2.0.3",
"@types/jquery": "^3.3.38",
"@types/node": "^12.11.1",
"codelyzer": "^5.1.2",
"jasmine-core": "~3.5.0",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~5.0.0",
"karma-chrome-launcher": "~3.1.0",
"karma-coverage-istanbul-reporter": "~2.1.0",
"karma-jasmine": "~3.0.1",
"karma-jasmine-html-reporter": "^1.4.2",
"protractor": "~5.4.3",
"ts-node": "~8.3.0",
"tslint": "~6.1.0",
"typescript": "~3.8.3",
"webpack": "^4.43.0",
"@angular-devkit/architect": "~0.900",
"firebase-tools": "^8.0.0",
"fuzzy": "^0.1.3",
"inquirer": "^6.2.2",
"inquirer-autocomplete-prompt": "^1.0.1"
}
}
David spotted Ivy had an error. I then enabled Ivy in tsconfig.json > compilerOptions > enableIvy, and it threw a stack of errors re fontawesome:
Warning: Invalid constructor parameter decorator in C:/Users/user/Documents/Personal_Web_Projects/comspace.com/comspace0.3/comspace/node_modules/angular-font-awesome/dist/angular-font-awesome.js:
function () { return [
{ type: LocationStrategy, },
]; }
I previously had to disable Ivy when implementing fontawesome, as they seemed to cause errors together and the StackOverflow solution seemed to be to disable Ivy. Now I need Ivy to implement Universal and I'm at a loss for what to do to get both of these packages to work together - preferably with Ivy enabled as this seems recommended.
Thanks David for spotting the Ivy problem.
You need to enable Ivy to get rid of the first problem (No NgModule found ...).
For the 2nd one (Invalid constructor parameter decorator), the reason is probably that you are using angular-font-awesome, which is not maintained anymore and does not work with Ivy
So uninstall that package (npm uninstall angular-font-awesome -S) and keep only the fortawesome packages:
"@fortawesome/angular-fontawesome": "^0.6.1",
"@fortawesome/fontawesome-free": "^5.13.1",
"@fortawesome/fontawesome-svg-core": "^1.2.29",
"@fortawesome/free-brands-svg-icons": "^5.13.1",
"@fortawesome/free-regular-svg-icons": "^5.13.0",
"@fortawesome/free-solid-svg-icons": "^5.13.1",
Note: Like I said in my comment, I do not think that you need to create the prerender.ts file. You can just add routes to render to angular.json and run ng run prerender