Seldaek/monolog · error · MissingExtensionException

The curl extension is needed to use the SlackWebhookHandler

Error message

The curl extension is needed to use the SlackWebhookHandler

What it means

Error "The curl extension is needed to use the SlackWebhookHandler" thrown in Seldaek/monolog.

Source

Thrown at src/Monolog/Handler/SlackWebhookHandler.php:65

     * @param bool        $includeContextAndExtra Whether the attachment should include context and extra data
     * @param string[]    $excludeFields          Dot separated list of fields to exclude from slack message. E.g. ['context.field1', 'extra.field2']
     *
     * @throws MissingExtensionException If the curl extension is missing
     */
    public function __construct(
        string $webhookUrl,
        ?string $channel = null,
        ?string $username = null,
        bool $useAttachment = true,
        ?string $iconEmoji = null,
        bool $useShortAttachment = false,
        bool $includeContextAndExtra = false,
        $level = Level::Critical,
        bool $bubble = true,
        array $excludeFields = []
    ) {
        if (!\extension_loaded('curl')) {
            throw new MissingExtensionException('The curl extension is needed to use the SlackWebhookHandler');
        }

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

        $this->webhookUrl = $webhookUrl;

        $this->slackRecord = new SlackRecord(
            $channel,
            $username,
            $useAttachment,
            $iconEmoji,
            $useShortAttachment,
            $includeContextAndExtra,
            $excludeFields
        );
    }

    public function getSlackRecord(): SlackRecord

View on GitHub (pinned to 57eb102834)

When it happens

Trigger: Thrown at src/Monolog/Handler/SlackWebhookHandler.php:65 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/3f3056de9904b3be. Report an issue: GitHub.