added api endpoint and auto update fix

filcnaplo_kreta_api/lib/client/api.dart

@@ -24,6 +24,11 @@ class KretaAPI {
       KretaApiEndpoints.groupAverages +
       "?oktatasiNevelesiFeladatUid=" +
       uid;
+    static String averages(String iss, String uid) =>
+      BaseKreta.kreta(iss) +
+      KretaApiEndpoints.averages +
+      "?oktatasiNevelesiFeladatUid=" +
+      uid;
   static String timetable(String iss, {DateTime? start, DateTime? end}) =>
       BaseKreta.kreta(iss) +
       KretaApiEndpoints.timetable +
@@ -90,6 +95,8 @@ class KretaApiEndpoints {
   static const groups = "/ellenorzo/V3/Sajat/OsztalyCsoportok";
   static const groupAverages =
       "/ellenorzo/V3/Sajat/Ertekelesek/Atlagok/OsztalyAtlagok";
+  static const averages =
+      "/ellenorzo/V3/Sajat/Ertekelesek/Atlagok/TantargyiAtlagok";
   static const timetable = "/ellenorzo/V3/Sajat/OrarendElemek";
   static const exams = "/ellenorzo/V3/Sajat/BejelentettSzamonkeresek";
   static const homework = "/ellenorzo/V3/Sajat/HaziFeladatok";

filcnaplo_kreta_api/lib/providers/homework_provider.dart

@@ -73,8 +73,16 @@ class HomeworkProvider with ChangeNotifier {
     if (user == null) throw "Cannot fetch Homework for User null";
 
     String iss = user.instituteCode;
-    List? homeworkJson = await Provider.of<KretaClient>(_context, listen: false)
-        .getAPI(KretaAPI.homework(iss, start: from));
+
+    List? homeworkJson = [];
+
+    try {
+      homeworkJson = await Provider.of<KretaClient>(_context, listen: false)
+          .getAPI(KretaAPI.homework(iss, start: from));
+    } catch (e) {
+      // error fetcing homework (unknown error)
+    }
+
     if (homeworkJson == null) throw "Cannot fetch Homework for User ${user.id}";
 
     List<Homework> homework = [];