From aa450618f8647a5c7595771cb101eb01f94b6e71 Mon Sep 17 00:00:00 2001
From: Bastian Rihm <brihm@intevation.de>
Date: Wed, 18 Oct 2023 08:15:01 +0200
Subject: [PATCH] Fix route state undefined (#2905)

---
 .../app/ui/modules/head-bar/services/routing-state.service.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/client/src/app/ui/modules/head-bar/services/routing-state.service.ts b/client/src/app/ui/modules/head-bar/services/routing-state.service.ts
index fa2d2c2136..81f1345b5b 100644
--- a/client/src/app/ui/modules/head-bar/services/routing-state.service.ts
+++ b/client/src/app/ui/modules/head-bar/services/routing-state.service.ts
@@ -63,7 +63,9 @@ export class RoutingStateService {
                 pairwise()
             )
             .subscribe((event: any[]) => {
-                this.skipUnsafeRouteCheck = router.getCurrentNavigation()?.extras?.state[`canGoBack`] ?? false;
+                this.skipUnsafeRouteCheck =
+                    router.getCurrentNavigation()?.extras?.state &&
+                    router.getCurrentNavigation()?.extras?.state[`canGoBack`];
                 this._previousUrl = event[0]?.urlAfterRedirects ?? this._currentUrl;
                 const currentNavigationExtras = router.getCurrentNavigation()?.extras;
                 if (currentNavigationExtras && currentNavigationExtras.state && currentNavigationExtras.state[`back`]) {