Talos docs

behaviour-prop-unknown

Since 0.6

a class X extends Behaviour was given a script prop with no field of that name, so it would set nothing (thrown in init, which disables the behaviour); the message lists the fields

Plain text
Severityerror

Meaning

a class X extends Behaviour was given a script prop with no field of that name, so it would set nothing (thrown in init, which disables the behaviour); the message lists the fields

Fix

name a field the class declares with a value (speed = 3), or add the field; playtest is the engine's and never refused