Why I have this on my server log: CryptographyDeprecationWarning: Python 3.6 is no longer supported by the Python core team?

python-3
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I upgraded my underlying OS from RHEL7 to RHEL8 with MySQL 8.0.32. When I start the server I found /home/askbotuser/askbotenv/lib/python3.6/site-packages/pymysql/_auth.py:8: CryptographyDeprecationWarning: Python 3.6 is no longer supported by the Python core team. Therefore, support for it is deprecated in cryptography. The next release of cryptography will remove support for Python 3.6. from cryptography.hazmat.backends import default_backend.

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