I try to create example extjs app using thishttps://docs.sencha.com/extjs/6.5.1/...mysql_php.html guide. And I still getting this error:

Przechwytywanie1.PNG

'Invalid request' is from line 29 in router.php, but I can figured out why it cant find extAction.


Code:
if (isset($HTTP_RAW_POST_DATA)) {
    header('Content-Type: text/javascript');
    $data = json_decode($HTTP_RAW_POST_DATA);
}
else if(isset($_POST['extAction'])){ // form post
$isForm = true;
    $isUpload = $_POST['extUpload'] == 'true';
    $data = new BogusAction();
    $data->action = $_POST['extAction'];
    $data->method = $_POST['extMethod'];
    $data->tid = isset($_POST['extTID']) ? $_POST['extTID'] : null;
    $data->data = array($_POST, $_FILES);
}
else {
    die('Invalid request.');
}