Fix DataCloneError

✅ Solution

The DataCloneError in Cloudflare Workers usually arises when attempting to pass non-cloneable objects (like functions, class instances with methods, or certain DOM nodes) across the Worker's boundaries via message passing or durable objects. To fix this, ensure you only send plain JavaScript objects and primitive data types between Workers. If you need to transfer complex data, serialize it into a JSON string before sending, and then deserialize it on the receiving end, or redesign your code to avoid sending such data in the first place.