How to pass input data from ReactJS to Flask-Python (Backend)

  const onSearch = () => {
    navigate(`/search?q=${searchedText}`);
    fetch('/ML/search',{
      method: 'POST',
      body: JSON.stringify({
        content:searchedText
      })
    }).then(response => response.json()
      .then(data => ({ data, response })))
      .then(({ data, response }) =>  {
        console.log(data)
      })
  };