Unbound atom-space symbol

space.unbound

Message

Unbound atom-space symbol '<name>'.

What it means

A named space such as &kb is referenced but never bound with bind! or new-space.

Why it happens

The space name is misspelled, or the bind! that creates it is missing or out of scope.

How to fix it

Bind the space before use, !(bind! &kb (new-space)), or reference the correct name (&self for the current space).

!(match &kb ($x) $x)   ; space.unbound: &kb was never bound

Controlled by the metta.diagnostics.unboundSpaces setting.