파이참을 끄고 다시 켜도 flask가 인식이 안됩니다.

작성한 코드 및 에러 메세지

C:\Users\PC\Desktop\스파르타\projects\prac\venv\Scripts\python.exe C:\Users\PC\Desktop\스파르타\projects\prac\app.py 

 * Serving Flask app 'app'

 * Debug mode: on

WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.

 * Running on all addresses (0.0.0.0)

 * Running on http://127.0.0.1:5000

 * Running on http://192.168.219.101:5000

Press CTRL+C to quit

 * Restarting with stat

 * Debugger is active!

 * Debugger PIN: 841-229-610

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