From 88b9527f8ae3cbbad7d00cd96f542ffe34cb00a4 Mon Sep 17 00:00:00 2001
From: Andrew Kingston <aptkingston@ssl-mail.com>
Date: Wed, 16 Jun 2021 09:37:23 +0100
Subject: [PATCH] Fix crash determining illegal children when selectedComponent
 is null

---
 .../components/design/AppPreview/ComponentSelectionList.svelte  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/builder/src/components/design/AppPreview/ComponentSelectionList.svelte b/packages/builder/src/components/design/AppPreview/ComponentSelectionList.svelte
index caf68e40ea..0d4f4ffe9c 100644
--- a/packages/builder/src/components/design/AppPreview/ComponentSelectionList.svelte
+++ b/packages/builder/src/components/design/AppPreview/ComponentSelectionList.svelte
@@ -7,7 +7,7 @@
 
   const isChildAllowed = ({ name }, selectedComponent) => {
     const currentComponent = store.actions.components.getDefinition(
-      selectedComponent._component
+      selectedComponent?._component
     )
 
     return currentComponent?.illegalChildren?.includes(name)