fix

npm/ng-packs/packages/schematics/src/commands/ssr-add/server/files/server-builder/ngmodule-src/app/app.module.server.ts.template

@@ -1,5 +1,6 @@
-import { NgModule, inject, PLATFORM_ID, TransferState } from '@angular/core';
+import { NgModule, inject, PLATFORM_ID, TransferState, APP_INITIALIZER } from '@angular/core';
 import { ServerModule } from '@angular/platform-server';
+import {isPlatformServer} from "@angular/common";
 
 import { <%= appModuleName %> } from '<%= appModulePath %>';
 import { <%= appComponentName %> } from '<%= appComponentPath %>';