Index: src/services/PermissionsService.js
===================================================================
--- src/services/PermissionsService.js	(revision 7bc636b391c66ac399c33e54f7173a022c6a3cbd)
+++ src/services/PermissionsService.js	(revision 6224462ba081c001ea5cbd496e2465f52fedf411)
@@ -44,4 +44,5 @@
     if (!user) return false;
     if (user.role === 'god') return true;
+    if (!site) return false; // geen site-context (bv. hub-landing) -> niets te posten
     if (user.id === site.owner_id) return true; // Site owner
     if (this.canAdminSite(user, site)) return true;