Refine

main.py

@@ -113,7 +113,10 @@ async def fastapi_export_inp(network: str) -> ChangeSet:
     open_project(network)
     op['vertex'] = json.dumps(get_all_vertices(network))
     op['scada'] = json.dumps(get_all_scada_elements(network))
-    op['scada_db'] = get_extension_data(network, 'scada_db')
+    db = get_extension_data(network, 'scada_db')
+    scada_db = ''
+    if db:
+        scada_db = db
     close_project(network)
 
     return cs