I'm using the React 16 beta (react-fiber) with server side rendering
What I am to understand this to mean?
warning.js:36 Warning: Did not expect server HTML to contain a <div> in <div>.
Looking for that error in the react code it seems that this happens when the SSR html can't be rehydrated.
So you are somehow initially rendering a different tree on the client vs the server.
Just change express response from
<body>
<div id="root">
${markup}
</div>
</body>
to
<body>
<div id="root">${markup}</div>
</body>
Remove space between tags
来源：https://stackoverflow.com/questions/45350360/react-16-warning-warning-js36-warning-did-not-expect-server-html-to-contain-a