Lightsails error:14094410:SSL routines:ssl3_read_bytes:sslv3 alert handshake failure

I am newbie of Lightsail with Cloudflare. CURL -X POST https://xxx.com
Ubuntu 18.04: curl error:14094410:SSL routines:ssl3_read_bytes:sslv3 alert handshake failure.

apache2 ssl module is enabled so far.
apache2 virtual host uses only http, I set Cloudflare to rewrite https instead.

SSLv3 is generally disabled everywhere, only Business/Enterprise customers can re-enable it (but it is a heavy risk to security).

Make sure your curl, openssl, etc. are up-to-date to use TLS 1.2/1.3:

sudo apt update
sudo apt upgrade
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