The webhookUrl was not provided. For security reasons the secret URL must be provided in the action yaml using a context expression and can not be read as a default.

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: rjstone/discord-webhook-notify@v1.0.4. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.