Talos docs

ui.panel.unknown

Since next

a ctx.ui.panel* call named an entity that has no uiPanel, or an id or handle that does not resolve

Plain text
Severityerror

Meaning

a ctx.ui.panel* call named an entity that has no uiPanel, or an id or handle that does not resolve

Fix

name an entity that carries a uiPanel component (ctx.ui.panelStack(e) is [] for one that does not)