neon: prevent race condition on logout

packages/neon/neon/lib/src/pages/home.dart

@@ -197,8 +197,8 @@ class _HomePageState extends State<HomePage> {
                       builder: (final context) {
                         if (accountsSnapshot.hasData) {
                           final accounts = accountsSnapshot.data!;
-                          final account = accounts.find(_account.id)!;
-
+                          final account = accounts.find(_account.id);
+                          if (account != null) {
                             final isQuickBar = navigationMode == NavigationMode.quickBar;
                             final drawer = Builder(
                               builder: (final context) => Drawer(
@@ -543,7 +543,8 @@ class _HomePageState extends State<HomePage> {
                                                   Expanded(
                                                     child: Center(
                                                       child: Text(
-                                                      AppLocalizations.of(context).errorNoCompatibleNextcloudAppsFound,
+                                                        AppLocalizations.of(context)
+                                                            .errorNoCompatibleNextcloudAppsFound,
                                                         textAlign: TextAlign.center,
                                                       ),
                                                     ),
@@ -568,6 +569,7 @@ class _HomePageState extends State<HomePage> {
                               ],
                             );
                           }
+                        }
                         return Container();
                       },
                     ),