Seldaek/monolog · error · UnexpectedValueException

Invalid protocol (${scheme}). Valid options are ${options}

Error message

Invalid protocol (${scheme}). Valid options are ${options}

What it means

Error "Invalid protocol (${scheme}). Valid options are ${options}" thrown in Seldaek/monolog.

Source

Thrown at src/Monolog/Handler/CubeHandler.php:51

    private array $acceptedSchemes = ['http', 'udp'];

    /**
     * Create a Cube handler
     *
     * @throws \UnexpectedValueException when given url is not a valid url.
     *                                   A valid url must consist of three parts : protocol://host:port
     *                                   Only valid protocols used by Cube are http and udp
     */
    public function __construct(string $url, int|string|Level $level = Level::Debug, bool $bubble = true)
    {
        $urlInfo = parse_url($url);

        if ($urlInfo === false || !isset($urlInfo['scheme'], $urlInfo['host'], $urlInfo['port'])) {
            throw new \UnexpectedValueException('URL "'.$url.'" is not valid');
        }

        if (!\in_array($urlInfo['scheme'], $this->acceptedSchemes, true)) {
            throw new \UnexpectedValueException(
                'Invalid protocol (' . $urlInfo['scheme']  . ').'
                . ' Valid options are ' . implode(', ', $this->acceptedSchemes)
            );
        }

        $this->scheme = $urlInfo['scheme'];
        $this->host = $urlInfo['host'];
        $this->port = $urlInfo['port'];

        parent::__construct($level, $bubble);
    }

    /**
     * Establish a connection to an UDP socket
     *
     * @throws \LogicException           when unable to connect to the socket
     * @throws MissingExtensionException when there is no socket extension
     */

View on GitHub (pinned to 57eb102834)

When it happens

Trigger: Thrown at src/Monolog/Handler/CubeHandler.php:51 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Seldaek/monolog@57eb102834 (2026-08-17). Data as JSON: /api/errors/ca648aa53e049bab. Report an issue: GitHub.