WT1.1.0+41 error fixing

lib/service/customer_exercise_device_service.dart

@@ -11,6 +11,7 @@ class CustomerExerciseDeviceApi with Logging {
   Future<List<CustomerExerciseDevice>> getDevices(int customerId) async {
     List<CustomerExerciseDevice> devices;
     try {
+      log(" --- get customer_exercise_devices: ");
       final body = await _client.get("customer_exercise_device/customer/" + customerId.toString(), "");
       final Iterable json = jsonDecode(body);
       devices = json.map((device) => CustomerExerciseDevice.fromJson(device)).toList();

lib/service/purchase.dart

@@ -1,6 +1,7 @@
 import 'package:aitrainer_app/model/cache.dart';
 import 'package:aitrainer_app/model/purchase.dart';
 import 'package:aitrainer_app/service/logging.dart';
+import 'package:aitrainer_app/util/not_found_exception.dart';
 import 'dart:convert';
 import 'api.dart';
 
@@ -8,10 +9,15 @@ class PurchaseApi with Logging {
   final APIClient _client = new APIClient();
 
   Future<List<Purchase>> getPurchasesByCustomer(int customerId) async {
-    final body = await _client.get("purchase/customer/" + customerId.toString(), "");
-    final Iterable json = jsonDecode(body);
-    final List<Purchase> purchases = json.map((purchase) => Purchase.fromJson(purchase)).toList();
-    Cache().setPurchases(purchases);
+    List<Purchase> purchases = List();
+    try {
+      final body = await _client.get("purchase/customer/" + customerId.toString(), "");
+      final Iterable json = jsonDecode(body);
+      final List<Purchase> purchases = json.map((purchase) => Purchase.fromJson(purchase)).toList();
+      Cache().setPurchases(purchases);
+    } on NotFoundException catch (e) {
+      log("No purchases found");
+    }
     return purchases;
   }