fixed according to suggestion

Signed-off-by: JeevaRamanathan M <jeevaramanathan.m@infosys.com>

frontend/src/store.ts

@@ -23,7 +23,10 @@ const preloadedState: { preference: Preference } = {
     chunks: JSON.parse(chunks ?? '2').toString(),
     token_limit: token_limit ? parseInt(token_limit) : 2000,
     selectedDocs: doc !== null ? JSON.parse(doc) : null,
-    conversations: null,
+    conversations: {
+      data: null,
+      loading: false,
+    },
     sourceDocs: [
       {
         name: 'default',