code: def get_ssl_context(private_key, certificate):
      
      if (
          certificate
          and os.path.isfile(certificate)
          and private_key
          and os.path.isfile(private_key)
      ):
          context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
          context.load_cert_chain(certificate, private_key)
          return context
      return None
docs: Get ssl context from private key and certificate paths.
      The return value is used when calling Flask.
      i.e. app.run(ssl_context=get_ssl_context(,,,))