wrap isLoading into mounted and setState

lib/presentation/views/main_menu/group_view/groups_view.dart

@@ -105,7 +105,11 @@ class _GroupsViewState extends State<GroupsView> {
         groups = loadedGroups
           ..sort((a, b) => b.createdAt.compareTo(a.createdAt));
       });
-      isLoading = false;
+      if (mounted) {
+        setState(() {
+          isLoading = false;
+        });
+      }
     });
   }
 }

lib/presentation/views/main_menu/match_view/create_match/create_match_view.dart

@@ -108,7 +108,6 @@ class _CreateMatchViewState extends State<CreateMatchView> {
       groupsList = result[0] as List<Group>;
       playerList = result[1] as List<Player>;
     });
-
     filteredPlayerList = List.from(playerList);
   }
 

lib/presentation/views/main_menu/match_view/match_view.dart

@@ -122,9 +122,11 @@ class _MatchViewState extends State<MatchView> {
       final loadedMatches = results[0] as List<Match>;
       matches = loadedMatches
         ..sort((a, b) => b.createdAt.compareTo(a.createdAt));
-      setState(() {
-        isLoading = false;
-      });
+      if (mounted) {
+        setState(() {
+          isLoading = false;
+        });
+      }
     });
   }
 }

lib/presentation/widgets/player_selection.dart

@@ -78,7 +78,11 @@ class _PlayerSelectionState extends State<PlayerSelection> {
           suggestedPlayers = [...loadedPlayers];
         }
       });
-      isLoading = false;
+      if (mounted) {
+        setState(() {
+          isLoading = false;
+        });
+      }
     });
   }