fix approval user in execl

processes/views.py

@@ -652,18 +652,25 @@ def export_requests_excel(request):
                 if last_payment:
                     settlement_dates_map[invoice.process_instance_id] = last_payment.created
         
-        # Get installation approval data
+        # Get installation approval data by Water Resource Manager role
         from processes.models import StepInstance, StepApproval
+        from accounts.models import Role
+        from common.consts import UserRoles
+        
+        # Get the Water Resource Manager role
+        water_manager_role = Role.objects.filter(slug=UserRoles.WATER_RESOURCE_MANAGER.value).first()
+        
         installation_steps = StepInstance.objects.filter(
             process_instance_id__in=assignment_ids,
-            step__slug='installation_report',  # Assuming this is the slug for installation step
+            step__order=6,  # Installation report step is order 6
             status='completed'
         ).select_related('process_instance')
         
         for step_instance in installation_steps:
-            # Get the approval that completed this step
+            # Get the approval by Water Resource Manager role that completed this step
             approval = StepApproval.objects.filter(
                 step_instance=step_instance,
+                role=water_manager_role,
                 is_deleted=False
             ).select_related('approved_by').order_by('-created_at').first()