Worked in xampp without any Problem. Uploaded to Strato now it won't work anymore. Also, it stops building the rest of the Site but no error.
$stmt = $conn->prepare('SELECT * FROM tuerchen WHERE id=?');
$stmt->bind_param('i', $_GET["day"]);
$stmt->execute();
//Reaches here
$result = $stmt->get_result();
//Wont reach here
$fetch = $result->fetch_assoc();