bug fix

lib/screens/prescription/add_prescription_form.dart

@@ -1228,7 +1228,7 @@ class _PrescriptionFormWidgetState extends State<PrescriptionFormWidget> {
                                                       .addMedication,
                                                   fontWeight: FontWeight.w600,
                                                   onPressed: () {
-                                                    // formKey.currentState.save();
+                                                    formKey.currentState.save();
                                                     // Navigator.pop(context);
                                                     // openDrugToDrug();
                                                     if (route == null ||
@@ -1520,6 +1520,7 @@ class _PrescriptionFormWidgetState extends State<PrescriptionFormWidget> {
 
   getPriscriptionforDrug(List<PrescriptionModel> prescriptionList) {
     var prescriptionDetails = [];
+    if (prescriptionList.length > 0) {
       prescriptionList[0].entityList.forEach((element) {
         if (element.mediSpanGPICode != null) {
           prescriptionDetails.add({
@@ -1535,6 +1536,7 @@ class _PrescriptionFormWidgetState extends State<PrescriptionFormWidget> {
           });
         }
       });
+    }
     if (_selectedMedication.mediSpanGPICode != null) {
       prescriptionDetails.add({
         'DrugId': _selectedMedication.mediSpanGPICode,