From e2749ffc0da80ae6af60968f85b6b2dc4ed954af Mon Sep 17 00:00:00 2001
From: Atli <atliunnsteinsson@gmail.com>
Date: Thu, 23 Mar 2023 16:22:53 +0000
Subject: [PATCH] Update flushbar_route.dart

---
 lib/flushbar_route.dart | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/flushbar_route.dart b/lib/flushbar_route.dart
index aaaa6bb..f475a68 100644
--- a/lib/flushbar_route.dart
+++ b/lib/flushbar_route.dart
@@ -434,7 +434,9 @@ class FlushbarRoute<T> extends OverlayRoute<T> {
     assert(!_transitionCompleter.isCompleted,
         'Cannot dispose a $runtimeType twice.');
     _controller?.dispose();
-    _transitionCompleter.complete(_result);
+    if (_result != null) {
+      _transitionCompleter.complete(_result);
+    }
     super.dispose();
   }