Update app.py

app.py

@@ -625,7 +625,17 @@ class RealEstateModelPipeline:
         
         # Helper function to get value
         def get(key, default=0):
-            return d.get(key, default)
+            value = d.get(key, default)
+            # CRITICAL: Convert None to default
+            return default if value is None else value
+        # def safe_multiply(a, b, default=0):
+        #     """Safely multiply two values, handling None"""
+        #     if a is None or b is None:
+        #         return default
+        #     try:
+        #         return a * b
+        #     except:
+        #         return default
         
         # BASIC PROPERTY METRICS
         results['UNITS'] = get('property_info.units')