Fix SerovalMissingInstanceError

✅ Solution

The "SerovalMissingInstanceError" in Clerk often arises when your metadata (public or private) contains complex data structures like Promises, Dates, or custom class instances that Seroval (Clerk's serialization library) can't natively serialize. To fix this, either convert these complex data types into simple serializable formats like strings or numbers *before* storing them in metadata, or implement a custom serializer/deserializer for those types within your Clerk app, as outlined in Clerk's documentation.