Update app.py

app.py

@@ -14,7 +14,7 @@ def update_header(file_info):
 
 def generate_map(file_path):
     # Load the postcodes
-    postcode_mapping = load_data('../data/ukpostcodes.csv')
+    postcode_mapping = load_data('data/ukpostcodes.csv')
     # Load the data (this needs to be adapted to work outside Flask)
     postcodes = load_data(file_path)