Encountered unknown address header

[jinglescode]

What is causing this error?

Deserialization failed in Address because: Encountered unknown address header 0b10101101

When doing

const addressCose: Serialization.Address = Serialization.Address.from_bytes(headerCBORBytes);

Where headerCBORBytes is:

const headerCBORBytes: Uint8Array | undefined = protectedHeaders.header(MessageSigning.Label.new_text('address'))?.as_bytes();