Error: Content placeholder not found in template.

在做Vue-SSR时候报错信息如下：

 throw new Error("Content placeholder not found in template.")
    ^

Error: Content placeholder not found in template.
    at parseTemplate (F:\vue-ssr-todo\ssr-example\node_modules\[email protected]@vue-server-renderer\build.dev.js:8788:11)
    at new TemplateRenderer (F:\vue-ssr-todo\ssr-example\node_modules\[email protected]@vue-server-renderer\build.dev.js:8881:9)
    at createRenderer (F:\vue-ssr-todo\ssr-example\node_modules\[email protected]@vue-server-renderer\build.dev.js:9146:26)
    at createRenderer$1 (F:\vue-ssr-todo\ssr-example\node_modules\[email protected]@vue-server-renderer\build.dev.js:9604:10)
    at createBundleRenderer (F:\vue-ssr-todo\ssr-example\node_modules\[email protected]@vue-server-renderer\build.dev.js:9521:20)
    at Object. (F:\vue-ssr-todo\ssr-example\server.js:25:18)
    at Module._compile (internal/modules/cjs/loader.js:776:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)

解决方案在index.html中的body中插入

切记添加的占位符不能存在空格