Used properly, now link tip:
Tue May 18 15:34:14 2021 VERIFY ERROR: the depth=1, the ERROR=unable to get the local issuer certificate: C=US, O=Let 's Encrypt, CN=R3
Tue May 18 15:34:14 2021 OpenSSL: error: 1416 f086: SSL routines: tls_process_server_certificate: certificate verify failed
Tue May 18 15:34:14 2021 TLS_ERROR: BIO read tls_read_plaintext error
Tue May 18 15:34:14 2021 TLS Error: TLS object - & gt; Incoming plaintext read error
Tue May 18 15:34:14 2021 TLS Error: TLS handshake failed
Tue May 18 15:34:14 2021 Fatal TLS error (check_tls_errors_co), restarting


How to solve