Merge branch 'dev_na' of http://111.10.202.195:3000/chenh/imeeting into dev_ymcg

frontend/src/pages/business/SpeakerReg.tsx

@@ -95,6 +95,7 @@ const SpeakerReg: React.FC = () => {
   }, []);
 
   useEffect(() => {
+    mountedRef.current = true;
     void fetchUsers();
     return () => {
       mountedRef.current = false;