Merge pull request #4600 from vector-im/element_4599

Fix Crash when opening the new Room Notification Settings Screen

CHANGES.rst

@@ -12,6 +12,7 @@ Changes to be released in next version
 🐛 Bugfix
  * Room: Fixed mentioning users from room info member details (#4583)
  * Settings: Disabled autocorrection when entering an identity server (#4593).
+ * Room Notification Settings: Fix Crash when opening the new Room Notification Settings Screen (Not yet released) (#4599).
 
 ⚠️ API Changes
  * 

Riot/Modules/Room/NotificationSettings/RoomNotificationsSettingsService.swift

@@ -264,11 +264,17 @@ fileprivate extension MXRoom {
     }
     
     var overridePushRule: MXPushRule? {
-        getRoomRule(from: mxSession.notificationCenter.rules.global.override)
+        guard let overrideRules = mxSession.notificationCenter.rules.global.override else {
+            return nil
+          }
+        return getRoomRule(from: overrideRules)
     }
     
     var roomPushRule: MXPushRule? {
-        getRoomRule(from: mxSession.notificationCenter.rules.global.room)
+        guard let roomRules = mxSession.notificationCenter.rules.global.room else {
+            return nil
+          }
+        return getRoomRule(from: roomRules)
     }
     
     var notificationState: RoomNotificationState {