Error

[reveurguy]

I am following the repo code.
This is my frontend code:

  const replicatePrompt = `Create a prompt for stable diffusion to create an image based on the user's entry. User's entry is : User Entry: ${express}`

  const handleReplicate = async () => {
    const response = await fetch("/api/predictions", {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        prompt: replicatePrompt,
      }),
    })
    let prediction: any = await response.json()
    if (response.status !== 201) {
      setError(prediction.detail)
      return
    }
    setPrediction(prediction)

    while (
      prediction.status !== "succeeded" &&
      prediction.status !== "failed"
    ) {
      await sleep(1000)
      const response = await fetch("/api/predictions/" + prediction.id)
      prediction = await response.json()
      if (response.status !== 200) {
        setError(prediction.detail)
        return
      }
      console.log({ prediction })
      setPrediction(prediction)
    }
  }

This is the api file code extract:

  const { prompt } = req.body.prompt

  const prediction = await replicate.predictions.create({
    version: "db21e45d3f7023abc2a46ee38a23973f6dce16bb082a930b0c49861f96d1e5bf",
    input: {
      prompt: prompt,
      negative_prompt: "text, meat",
    },
  })

When i run the above code, prompt field is empty in the final api call.
If i use const { prompt } = await req.json() then i get not json error.
What is the error in the above code? How can i solve this?