hotfix

frontend/lib/src/model/appointment.dart

@@ -25,7 +25,7 @@ class Appointment {
   int day;
   String time = "";
   String duration = "";
-  String location;
+  String location = "";
   String note = "";
 
   Map<String,dynamic> toJson() => {

frontend/lib/src/view/components/appointment_new_component.dart

@@ -32,6 +32,7 @@ class AppointmentNewComponent implements OnActivate {
   ///Methode zum erstellen des neuen Termins
   Future<void> create() async {
     appointment.date = dateString;
+    print(appointment);
     await _appointmentService.create(appointment);
     goBack();
   }