Can't use SSL_get_servername

[Telfie70]

I have been following the instructions here and I am not getting the server name in Step 2

Step 2: Get the certificate openssl s_client -showcerts -connect powerwall:443 < /dev/null | sed --quiet '/BEGIN CERTIFICATE/,/END CERTIFICATE/p' > cacert.pem

The following is returned
xxxx-MacBook-Air ~ % openssl s_client -showcerts -connect powerwall:443 < /dev/null | sed -n '/BEGIN CERTIFICATE/,/END CERTIFICATE/p' > cacert.pem Can't use SSL_get_servername depth=0 C = US, ST = California, L = Palo Alto, O = Tesla, OU = Tesla Energy Products, CN = e5f89d7e60fad20a38f9b64089e3aeb3 verify error:num=20:unable to get local issuer certificate verify return:1 depth=0 C = US, ST = California, L = Palo Alto, O = Tesla, OU = Tesla Energy Products, CN = e5f89d7e60fad20a38f9b64089e3aeb3 verify error:num=21:unable to verify the first certificate verify return:1 depth=0 C = US, ST = California, L = Palo Alto, O = Tesla, OU = Tesla Energy Products, CN = e5f89d7e60fad20a38f9b64089e3aeb3 verify return:1 DONE

Any advice on what the issue might be here?

[vls29]

Hi @Telfie70,

Edit: your command probably ran fine, check to see if there was a cacert.pem file created from your original command run.