这个问题通常是由于Angular Universal的配置错误引起的。确保正确地设置了应用程序的通用配置以确保正确渲染HTML内容和meta标签。

以下是一个可能的解决方案，使用Angular CLI中默认生成的应用程序为例：

1. 在根目录中安装@nguniversal/express-engine和@nguniversal/builders：

   npm install --save @nguniversal/express-engine @nguniversal/builders
   

2. 在angular.json文件中的server项目中添加Universal配置。替换项目名称和路径为你自己的。例如：

   "server": {
      "builder": "@angular-devkit/build-angular:server",
      "options": {
         "outputPath": "./dist/server",
         "main": "src/main.server.ts",
         "tsConfig": "tsconfig.server.json"
      },
      "configurations": {
         "production": {
            "fileReplacements": [
               {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
               }
            ]
         },
         "universal": {
            "fileReplacements": [
               {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.universal.ts"
               }
            ],
            "optimization": true,
            "outputHashing": "all",
            "sourceMap": false,
            "extractCss": true,
            "namedChunks": false,
            "aot": true,
            "vendorChunk": false,
            "buildOptimizer": true,
            "platform": "server"
         }
      }
   }
   

3. 在app.server.module.ts中，引入BrowserModule和ServerModule：

   import { BrowserModule } from '@angular/platform-browser';
   import { NgModule } from '@angular/core';
   import { ServerModule } from '@angular/platform-server';
   import { AppComponent } from './app.component';
   
   @NgModule({
      declarations: [
         AppComponent
      ],
      imports: [
         BrowserModule.withServerTransition({ appId: 'serverApp' }),
         ServerModule
      ],
      providers: [],
      bootstrap: [AppComponent]
   })
   export class AppServerModule { }
   

4. 在environment.universal.ts中，添加以下代码：

   export const environment = {
      production: true,
      server: true
   };
   

5. 在main.server.ts中，添加以下代码：

   import { enableProdMode } from '@angular/core';
   import { renderModuleFactory } from '@angular/platform-server';
   import { AppServerModuleNg