- added pec usage data;

- added stats for instructor manager dashboard;
- fixed dispalying 0 in tables in numeric inputs;

src/components/NotificationsSidebar/index.js

@@ -257,7 +257,9 @@ const NotificationsSidebar = () => {
     };
 
     useEffect(() => {
-        fetchMessages();
+        if (userData && userData.id) {
+            fetchMessages();
+        }
     }, [chosenCompanyId, userData.id, isConnected]);
 
     useEffect(() => {