diff --git a/lib/core/model/privilege/ProjectDetailListModel.dart b/lib/core/model/privilege/ProjectDetailListModel.dart
index b8241797..782c376b 100644
--- a/lib/core/model/privilege/ProjectDetailListModel.dart
+++ b/lib/core/model/privilege/ProjectDetailListModel.dart
@@ -1,9 +1,9 @@
 class ProjectDetailListModel {
-  int projectID;
-  String latitude;
-  String longitude;
-  int geofenceRadius;
-  String checkInQrCode;
+  int? projectID;
+  String? latitude;
+  String? longitude;
+  int? geofenceRadius;
+  String? checkInQrCode;
 
   ProjectDetailListModel(
       {this.projectID,
diff --git a/lib/pages/AlHabibMedicalService/ancillary-orders/ancillaryOrdersDetails.dart b/lib/pages/AlHabibMedicalService/ancillary-orders/ancillaryOrdersDetails.dart
index e077e545..915703aa 100644
--- a/lib/pages/AlHabibMedicalService/ancillary-orders/ancillaryOrdersDetails.dart
+++ b/lib/pages/AlHabibMedicalService/ancillary-orders/ancillaryOrdersDetails.dart
@@ -47,9 +47,8 @@ class _AnicllaryOrdersState extends State<AnicllaryOrdersDetails> with SingleTic
   String? selectedInstallmentPlan;
 
   List<AncillaryOrderProcDetailsList> selectedProcList = [];
-
   List<AncillaryOrdersListProcListModel> _ancillaryProcLists = [];
-  
+
   String? tamaraPaymentStatus;
   String? tamaraOrderID;
 
@@ -376,16 +375,11 @@ class _AnicllaryOrdersState extends State<AnicllaryOrdersDetails> with SingleTic
     );
   }
 
-  // Widget getAncillaryDetails() {
-  //   Map newMap = groupBy(_ancillaryProcLists[0].ancillaryOrderProcDetailsList, (obj) => obj.procedureCategoryName);
-  //   return Padding(padding: EdgeInsets.only(top: 0, bottom: 200), child: getHeaderDetails(newMap));
-  // }
+ 
 
-  Widget getAncillaryDetails(AnciallryOrdersViewModel model) {
+  Widget getAncillaryDetails() {
     Map<String, List<Object>> newMap = {};
-
-    // Grouping the list manually by the 'procedureCategoryName' key
-    model.ancillaryListsDetails[0].ancillaryOrderProcDetailsList!.forEach((obj) {
+    _ancillaryProcLists[0].ancillaryOrderProcDetailsList!.forEach((obj) {
       String key = obj.procedureCategoryName!;
       if (newMap.containsKey(key)) {
         newMap[key]!.add(obj);
@@ -399,9 +393,8 @@ class _AnicllaryOrdersState extends State<AnicllaryOrdersDetails> with SingleTic
       child: getHeaderDetails(newMap),
     );
   }
-    
-    
-    Widget getHeaderDetails(newMap) {
+
+  Widget getHeaderDetails(newMap) {
     List<Widget> list = [];
     newMap.forEach((key, value) {
       list.add(
@@ -526,15 +519,14 @@ class _AnicllaryOrdersState extends State<AnicllaryOrdersDetails> with SingleTic
           onSelectedMethod: (String method, [String? selectedInstallmentPlan]) {
             selectedPaymentMethod = method;
             this.selectedInstallmentPlan = selectedInstallmentPlan;
-            openPayment(selectedPaymentMethod, projectViewModel.user, double.parse(getTotalValue()), AppoitmentAllHistoryResultList(), model, selectedInstallmentPlan);
+            openPayment(selectedPaymentMethod, projectViewModel.user, double.parse(getTotalValue()), AppoitmentAllHistoryResultList(), selectedInstallmentPlan);
           },
           patientShare: double.parse(getTotalValue()),
           isFromAdvancePayment: !projectViewModel.havePrivilege(94),
         ));
   }
 
-  openPayment(String paymentMethod, AuthenticatedUser authenticatedUser, num amount, AppoitmentAllHistoryResultList appo, [String selectedInstallmentPlan]) {
-  openPayment(String paymentMethod, AuthenticatedUser authenticatedUser, num amount, AppoitmentAllHistoryResultList appo, AnciallryOrdersViewModel model, [String? selectedInstallmentPlan]) {
+  openPayment(String paymentMethod, AuthenticatedUser authenticatedUser, num amount, AppoitmentAllHistoryResultList appo, [String? selectedInstallmentPlan]) {
     browser = new MyInAppBrowser(onExitCallback: onBrowserExit, appo: appo, onLoadStartCallback: onBrowserLoadStart);
 
     transID = Utils.getAdvancePaymentTransID(widget.projectID, projectViewModel.user.patientID!);
diff --git a/lib/pages/BookAppointment/QRCode.dart b/lib/pages/BookAppointment/QRCode.dart
index 99bd8717..0f253b63 100644
--- a/lib/pages/BookAppointment/QRCode.dart
+++ b/lib/pages/BookAppointment/QRCode.dart
@@ -52,9 +52,8 @@ class _QRCodeState extends State<QRCode> {
   late BuildContext _context;
 
   late ProjectViewModel projectViewModel;
-  LocationUtils locationUtils;
-  ProjectDetailListModel projectDetailListModel;
- 
+  late LocationUtils locationUtils;
+  ProjectDetailListModel projectDetailListModel = ProjectDetailListModel();
 
   @override
   void initState() {
@@ -99,11 +98,11 @@ class _QRCodeState extends State<QRCode> {
   startLocationCheckIn() async {
     locationUtils = new LocationUtils(isShowConfirmDialog: true, context: context);
     locationUtils.getCurrentLocation(callBack: (value) {
-      projectDetailListModel = Utils.getProjectDetailObj(projectViewModel, widget.appointment.projectID);
-      double dist = Utils.distance(value.latitude, value.longitude, double.parse(projectDetailListModel.latitude), double.parse(projectDetailListModel.longitude)).ceilToDouble() * 1000;
+      projectDetailListModel = Utils.getProjectDetailObj(projectViewModel, widget.appointment!.projectID);
+      double dist = Utils.distance(value.latitude, value.longitude, double.parse(projectDetailListModel.latitude!), double.parse(projectDetailListModel.longitude!)).ceilToDouble() * 1000;
       print(dist);
-      if (dist <= projectDetailListModel.geofenceRadius) {
-        sendNfcCheckInRequest(projectDetailListModel.checkInQrCode);
+      if (dist <= projectDetailListModel.geofenceRadius!) {
+        sendNfcCheckInRequest(projectDetailListModel.checkInQrCode!);
       } else {
         AppToast.showErrorToast(message: TranslationBase.of(context).locationCheckInError);
       }
diff --git a/lib/pages/ToDoList/ToDo.dart b/lib/pages/ToDoList/ToDo.dart
index b53f5515..cefaaa4f 100644
--- a/lib/pages/ToDoList/ToDo.dart
+++ b/lib/pages/ToDoList/ToDo.dart
@@ -865,7 +865,7 @@ class _ToDoState extends State<ToDo> with SingleTickerProviderStateMixin {
           }
           dataLoaded = true;
           if (widget.isFromMyAppointments) {
-            performNextAction(widget.appointment);
+            performNextAction(widget.appointment!);
             widget.isFromMyAppointments = false;
           }
         });
diff --git a/lib/uitl/utils.dart b/lib/uitl/utils.dart
index ebbb6069..21bef1ce 100644
--- a/lib/uitl/utils.dart
+++ b/lib/uitl/utils.dart
@@ -821,7 +821,7 @@ class Utils {
 
   static double _toRadians(double degrees) => degrees * pi / 180;
 
-  static double _haversin(double radians) => pow(sin(radians / 2), 2);
+  static num _haversin(double radians) => pow(sin(radians / 2), 2);
 
   static Widget tableColumnValueWithUnderLine(String text, {bool isLast = false, bool isCapitable = true}) {
     return Column(
@@ -872,7 +872,7 @@ class Utils {
   }
 
   static ProjectDetailListModel getProjectDetailObj(ProjectViewModel projectViewModel, int projectID) {
-    ProjectDetailListModel projectDetailListModel;
+    ProjectDetailListModel projectDetailListModel = ProjectDetailListModel();
     projectViewModel.projectDetailListModel.forEach((element) {
       if (element.projectID == projectID) {
         projectDetailListModel = element;
@@ -881,7 +881,7 @@ class Utils {
     return projectDetailListModel;
   }
 
-  static String generateSignature() {}
+  //static String generateSignature() {}
 }
 
 Widget applyShadow({Color color = Colors.grey, double shadowOpacity = 0.5, double spreadRadius = 2, double blurRadius = 7, Offset offset = const Offset(2, 2), required Widget child}) {