fix stackoverflow bug

packages/stream_chat/example/lib/main.dart

@@ -4,7 +4,10 @@ import 'package:stream_chat/stream_chat.dart';
 Future<void> main() async {
   /// Create a new instance of [StreamChatClient] passing the apikey obtained from your
   /// project dashboard.
-  final client = StreamChatClient('b67pax5b2wdq');
+  final client = StreamChatClient(
+    'b67pax5b2wdq',
+    logLevel: Level.INFO,
+  );
 
   /// Set the current user. In a production scenario, this should be done using
   /// a backend to generate a user token using our server SDK.