Describe the role of the 'Error Trigger' node in handling 'n8n error workflows'.

The 'Error Trigger' node allows you to create custom error handling workflows. When an error occurs in another part of the workflow, the 'Error Trigger' is activated. This enables you to log errors, send notifications (e.g., email, Slack), attempt to retry failed operations, or perform any other desired actions in response to the error. It is essential for building robust workflows that can gracefully handle failures.