log null scope

dart/lib/src/client.dart

@@ -43,7 +43,11 @@ abstract class SentryClient {
       return emptyFuture;
     }
 
-    event = scope?.applyToEvent(event, hint) ?? event;
+    if (scope != null) {
+      event = scope.applyToEvent(event, hint);
+    } else {
+      _options.logger(SentryLevel.debug, 'No scope is defined');
+    }
 
     // dropped by scope event processors
     if (event == null) {

dart/lib/src/scope.dart

@@ -166,15 +166,17 @@ class Scope {
     // if the scope and the event have tag entries with the same key,
     // the event tags will be keeped
     event = event.copyWith(
-        tags: tags.map((key, value) => MapEntry(key, value))
-          ..addAll(event.tags ?? {}));
+      tags: tags.map((key, value) => MapEntry(key, value))
+        ..addAll(event.tags ?? {}),
+    );
 
     // Merge the scope extra.
     // if the scope and the event have extra entries with the same key,
     // the event extra will be keeped
     event = event.copyWith(
-        extra: extra.map((key, value) => MapEntry(key, value))
-          ..addAll(event.extra ?? {}));
+      extra: extra.map((key, value) => MapEntry(key, value))
+        ..addAll(event.extra ?? {}),
+    );
 
     // Merge the scope level.
     if (level != null) {