private function handleJsonError(int $code, $data): string
    {
        if ($code !== JSON_ERROR_UTF8) {
            $this->throwEncodeError($code, $data);
        }

        if (is_string($data)) {
            $this->detectAndCleanUtf8($data);
        } elseif (is_array($data)) {
            array_walk_recursive($data, [$this, 'detectAndCleanUtf8']);
        } else {
            $this->throwEncodeError($code, $data);
        }

        $json = $this->jsonEncode($data);

        if ($json === false) {
            $this->throwEncodeError(json_last_error(), $data);
        }

        return $json;
    }