POST broke ;-;

lib/arrival_post.dart

@@ -4,8 +4,11 @@ import 'package:http/http.dart' as http;
 import 'package:witl/arrival.dart';
 
 Future<Arrival> insertArrival(String date, int weekday, int line, bool direction) async {
+  final client = http.Client();
+
+  try {
     // POST response as JSON
-  final response = await http.post(
+    final response = await client.post(
       Uri.parse('http://141.144.238.26:48502/arrivals/insert'),
       headers: <String, String> {
         // Headers used
@@ -18,11 +21,16 @@ Future<Arrival> insertArrival(String date, int weekday, int line, bool direction
         'tram_line': line,
         'direction': direction,
       })
-  );
+    ).timeout(const Duration(seconds: 10));
 
     if (response.statusCode == 201) {
       return Arrival.fromJson(jsonDecode(response.body) as Map<String, dynamic>);
     } else {
       throw Exception('Insertion Failure.');
     }
+  } catch (error) {
+    throw Exception("Error Posting: $error");
+  } finally {
+    client.close();
+  }
 }

lib/main.dart

@@ -12,7 +12,8 @@ class MyApp extends StatefulWidget {
   @override
   State<MyApp> createState() => _MyAppState();
 
-  static _MyAppState of(BuildContext context) => context.findAncestorStateOfType<_MyAppState>()!;
+  static _MyAppState of(BuildContext context) =>
+    context.findAncestorStateOfType<_MyAppState>()!;
 }
 
 class _MyAppState  extends State<MyApp> {
@@ -67,10 +68,13 @@ class _MyAppState  extends State<MyApp> {
       switch(newTheme) {
         case "Light":
           _theme = ThemeMode.light;
+          break;
         case "Dark":
           _theme = ThemeMode.dark;
+          break;
         case "System Default":
           _theme = ThemeMode.system;
+          break;
       }
     });
   }