Update app.py

app.py

@@ -21,7 +21,7 @@ os.system('python download_models_hf.py')
 with open('/home/user/magic-pdf.json', 'r') as file:
     data = json.load(file)
 
-data['device-mode'] = "cuda"
+data['device-mode'] = "cpu"
 if os.getenv('apikey'):
     data['llm-aided-config']['title_aided']['api_key'] = os.getenv('apikey')
     data['llm-aided-config']['title_aided']['enable'] = True