fix issues with text fields

lib/screens/patients/profile/referral/refer-patient-screen.dart

@@ -123,16 +123,17 @@ class _PatientMakeReferralScreenState extends State<PatientMakeReferralScreen> {
                                     model.patientReferral.length - 1]
                                 .patientDetails
                                 .gender,
-                            referredDate: model
-                                .patientReferral[
-                                    model.patientReferral.length - 1]
-                                .referredOn
-                                .split(" ")[0],
-                            referredTime: model
-                                .patientReferral[
-                                    model.patientReferral.length - 1]
-                                .referredOn
-                                .split(" ")[1],
+                            ///TODO Elham*  check this
+                            // referredDate: model
+                            //     .patientReferral[
+                            //         model.patientReferral.length - 1]
+                            //     .referredOn
+                            //     .split(" ")[0],
+                            // referredTime: model
+                            //     .patientReferral[
+                            //         model.patientReferral.length - 1]
+                            //     .referredOn
+                            //     .split(" ")[1],
                             patientID:
                                 "${model.patientReferral[model.patientReferral.length - 1].patientID}",
                             isSameBranch: model

lib/widgets/patients/patient-referral-item-widget.dart

@@ -96,7 +96,7 @@ class PatientReferralItemWidget extends StatelessWidget {
                                           : Colors.red[900],
                         ),
                         AppText(
-                          referredDate,
+                          referredDate??"",
                           fontFamily: 'Poppins',
                           fontWeight: FontWeight.w600,
                           letterSpacing: -0.48,
@@ -109,7 +109,7 @@ class PatientReferralItemWidget extends StatelessWidget {
                       crossAxisAlignment: CrossAxisAlignment.start,
                       children: [
                         AppText(
-                          patientName,
+                          patientName??"",
                           fontSize: 16.0,
                           fontWeight: FontWeight.w600,
                           color: Color(0xff2E303A),
@@ -130,7 +130,7 @@ class PatientReferralItemWidget extends StatelessWidget {
                           width: 4,
                         ),
                         AppText(
-                          referredTime,
+                          referredTime??"",
                           fontFamily: 'Poppins',
                           fontWeight: FontWeight.w600,
                           fontSize: 12.0,