При передаче из Vue.JS ? axios в PHP (POST запрос) ошибка: isAxiosErro

JS

methods:{

timetable_to_db(){

let array_timetable = JSON.stringify(this.all_m)

axios({

method: 'POST',

     url: 'header_test.php',

     data: array_timetable,

headers: {

'content-type': 'application/json',

      'Content-Type': 'application/json;charset=UTF-8',

"Access-Control-Allow-Origin": "*",},

}).then((response) => {

console.log(response);

})

},PHP

header('Access-Control-Allow-Origin: *');

header('Access-Control-Allow-Methods: GET, POST, OPTIONS, PUT, DELETE');

header('Access-Control-Allow-Headers: X-Requested-With,Origin,Content-Type,Cookie,Accept');

if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') { header('HTTP/1.1 204 No Content'); die; }

$requestBody = file_get_contents('php://input'); print_r(json_encode($requestBody));