Warning message when connecting through zero trust proxy

After following this guide to setup an ssh proxy: https://developers.cloudflare.com/cloudflare-one/policies/filtering/network-policies/ssh-logging/

I get the following warning message anytime I login to the server:

client_global_hostkeys_private_confirm: server gave bad signature for ECDSA key 1: error in libcrypto

With -vv option:

debug1: client_global_hostkeys_private_confirm: server used untrusted RSA signature algorithm ssh-rsa for key 0, disregarding
client_global_hostkeys_private_confirm: server gave bad signature for ECDSA key 1: error in libcrypto

Any help on fixing this warning would be greatly appreciated. Thanks!