Invalid NFC Scan check added

lib/pages/ErService/EROnlineCheckIn/EROnlineCheckInHome.dart

@@ -344,10 +344,14 @@ class _EROnlineCheckInHomePageState extends State<EROnlineCheckInHomePage> with
     GifLoaderDialogUtils.showMyDialog(context);
     ClinicListService ancillaryOrdersService = new ClinicListService();
     ancillaryOrdersService.getProjectIDFromNFC(nfcID).then((response) {
-      print(response["GetProjectByNFC"]);
-      int projectID = response['GetProjectByNFC'][0]["ProjectID"];
-      GifLoaderDialogUtils.hideDialog(context);
-      Navigator.push(context, FadePage(page: EROnlineCheckInPaymentDetails(projectID: projectID)));
+      if (response["GetProjectByNFC"].length != 0) {
+        print(response["GetProjectByNFC"]);
+        int projectID = response['GetProjectByNFC'][0]["ProjectID"];
+        GifLoaderDialogUtils.hideDialog(context);
+        Navigator.push(context, FadePage(page: EROnlineCheckInPaymentDetails(projectID: projectID)));
+      } else {
+        AppToast.showErrorToast(message: "Invalid NFC Card Scanned.");
+      }
     }).catchError((err) {
       AppToast.showErrorToast(message: err.toString());
       GifLoaderDialogUtils.hideDialog(context);