fix prep-page

app/srv/ws/sync/editor/prep-page.ts

@@ -51,6 +51,7 @@ export const loadCompForPage = async (ctree: IRoot, sync: SyncConnection) => {
   const result = new Set<string>();
   const loading = {} as Record<string, Promise<void>>;
   const should_save = {} as Record<string, IItem>;
+  if (ctree && ctree.childs) {
     for (const child of ctree.childs) {
       await initLoadComp(
         { comps: mcomps, meta, mode: "page" },
@@ -99,6 +100,7 @@ export const loadCompForPage = async (ctree: IRoot, sync: SyncConnection) => {
         }
       );
     }
+  }
 
   if (Object.keys(should_save).length > 0) {
     for (const [comp_id, v] of Object.entries(should_save)) {