Make some changes to prevent crash

lib/packets/packets.dart

@@ -98,6 +98,7 @@ class PacketClient {
     CompoundTag ct = CompoundTag();
     Completer<void> onCompletion = Completer();
     socket!.listen((data) async {
+      try {
         CompoundTag result = await NbtIo.readFromStream(data);
 
         StringBuilder builder = StringBuilder();
@@ -105,8 +106,11 @@ class PacketClient {
 
         print("Response from server: \n${builder}");
         ct.put("result", result);
-
+      } catch (E, S) {
+        print(S);
+      } finally {
         onCompletion.complete();
+      }
     }, onError: (E, stack) {
       print("ERROR: ${E}\n${stack}");
       if (!onCompletion.isCompleted) onCompletion.complete();