Update app.py

app.py

@@ -79,7 +79,7 @@ async def on_chat_start():
     await msg.send()
 
     # load the file
-    loader = Loader(file_path)
+    loader = Loader(file.name)
     documents = loader.load()
     docs = text_splitter.split_documents(documents)
     for i, doc in enumerate(docs):