diff --git a/lib/core/application.dart b/lib/core/application.dart
index f38e458..4ff4116 100644
--- a/lib/core/application.dart
+++ b/lib/core/application.dart
@@ -4,7 +4,7 @@ import 'package:dart_framework/log/log.dart';
 import 'package:dart_framework/utils/system_util.dart' as system;
 
 class Application {
-  late Function(Object, StackTrace) writeLog;
+  Function(Object, StackTrace)? writeLog;
 
   Application(String name, String appID, Function() func,
       Function(Object, StackTrace) errorListener) {
@@ -13,7 +13,7 @@ class Application {
       writeLog = (error, stack) => logError('$error:\n$stack');
       func();
     }, (error, stack) {
-      writeLog(error, stack);
+      writeLog??(error, stack);
       errorListener(error, stack);
     });
   }