Fix Bugs

api/setup/save.php

@@ -12,16 +12,18 @@ if ($_SERVER["REQUEST_METHOD"] !== "POST") {
     ]);
 }
 
-if (!isset($_POST["username"]) || !isset($_POST["password"]) || !isset($_POST["password_repeat"])) {
+$input = json_decode(file_get_contents("php://input"), true);
+
+if (!isset($input["username"]) || !isset($input["password"]) || !isset($input["password_repeat"])) {
     $api->answer(400, [
         "error" => "missing_fields",
         "error_text" => "Some fields are missing"
     ]);
 }
 
-$username = $_POST["username"];
-$password = $_POST["password"];
-$password_repeat = $_POST["password_repeat"];
+$username = $input["username"];
+$password = $input["password"];
+$password_repeat = $input["password_repeat"];
 
 // Check Passwords
 if ($password !== $password_repeat) {