Error code: SEC_ERROR_UNKNOWN_ISSUER OpenSSL cannot connect to 17.172.34.122:443 The results might look ok but they could be nonsense. Really proceed ? ("yes"

Error code: SEC_ERROR_UNKNOWN_ISSUER OpenSSL cannot connect to 17.172.34.122:443 The results might look ok but they could be nonsense. Really proceed ? ("yes" to continue) --> yes Service detected: Couldn't determine what's running on port 443, assuming no HTTP service => skipping all HTTP checks Testing protocols via sockets except NPN+ALPN SSLv2 not offered (OK) SSLv3 not offered (OK) TLS 1 not offered TLS 1.1 not offered TLS 1.2 offered (OK) TLS 1.3 not offered and downgraded to a weaker protocol NPN/SPDY not offered ALPN/HTTP2 http/1.1 (offered) Testing cipher categories NULL ciphers (no encryption) not offered (OK) Anonymous NULL Ciphers (no authentication) not offered (OK) Export ciphers (w/o ADH+NULL) not offered (OK) LOW: 64 Bit + DES, RC[2,4] (w/o export) not offered (OK) Triple DES Ciphers / IDEA not offered Obsolete CBC ciphers (AES, ARIA etc.) offered Strong encryption (AEAD ciphers) offered (OK) Testing robust (perfect) forward secrecy, (P)FS -- omitting Null Authentication/Encryption, 3DES, RC4 No ciphers supporting Forward Secrecy offered Testing server preferences Has server cipher order? Handshake error!no matching cipher in this list found (pls report this): AES128-SHA:AES128-SHA256:AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:DHE-DSS-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:AES256-SHA256:ECDHE-RSA-AES128-SHA256:AES256-GCM-SHA384:AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-SHA256:ECDHE-ECDSA-AES128-SHA