Update process.py

process.py

@@ -24,7 +24,7 @@ def get_lat_lon(postcodes_df, postcode_mapping):
         # Attempt to identify the postcode column dynamically
         postcode_column = find_postcode_column(postcodes_df)
         if not postcode_column:
-            raise ValueError("No valid postcode column found")
+            raise gr.Error("No valid postcode column found")
 
         # Rename columns for consistency
         postcode_mapping.rename(columns={'postcode': 'Postal code'}, inplace=True)
@@ -48,6 +48,6 @@ def get_lat_lon(postcodes_df, postcode_mapping):
         results = result_df.to_dict(orient='records')
 
     except Exception as e:
-        raise Exception("Error processing postal codes: " + str(e))
+        raise gr.Error("Error processing postal codes: " + str(e))
     
     return results