Update app.py

app.py

@@ -17,8 +17,8 @@ def invoke(url):
         YoutubeAudioLoader([url], save_dir),
         OpenAIWhisperParser()
     )
-    docs = loader.load()
-    return docs[0].page_content
+    docs = await loader.load()
+    return docs.page_content
 
 description = """<a href='https://www.gradio.app/'>Gradio</a> UI using <a href='https://platform.openai.com/'>OpenAI</a> API with Whisper 1 foundation model."""