refactored timetable

lib/api/mhsl/customTimetableEvent/get/getCustomTimetableEventCache.dart

@@ -8,7 +8,17 @@ import 'getCustomTimetableEventResponse.dart';
 class GetCustomTimetableEventCache extends RequestCache<GetCustomTimetableEventResponse> {
   GetCustomTimetableEventParams params;
 
-  GetCustomTimetableEventCache(this.params, {onUpdate, renew}) : super(RequestCache.cacheMinute, onUpdate, renew: renew) {
+  GetCustomTimetableEventCache(
+    this.params, {
+    void Function(GetCustomTimetableEventResponse)? onUpdate,
+    void Function(Exception)? onError,
+    bool? renew,
+  }) : super(
+          RequestCache.cacheMinute,
+          onUpdate,
+          onError: onError ?? RequestCache.ignore,
+          renew: renew,
+        ) {
     start('customTimetableEvents');
   }