There is an error when I am setting https, as follow:
@kanjiushi, welcome to our community forum.
This message means there are additional A type DNS records (IP address records) which point the domain to servers not controlled by Netlify.
You can do this but, if such records exist, they will prevent the automatic SSL/TLS certificate provisioning process. Those records must be deleted for the automated certificate to be created by Netlify.
If it isn’t possible to remove those records we cannot create the SSL certificate. If this is the case, you can also upload your own SSL certificate if you prefer.
Please let us know if there are other questions about this.