Constructing a response with an empty ReadableStream

``` async function handleRequest() { const response = await fetch(/* */); // returns a 304 with empty response body return new Response(response.body, { status: response.status, statusText: response.statusText, headers: response.headers, }); } ``` Causes this error to be thrown: ``` Error while running request handler: Response constructor: Response body is given with a null body status. ```