I need help to understand this log

[fbj2047]

16:30:34 openvpn: Fatal TLS error (check_tls_errors_co), restarting
16:30:34 openvpn: Fatal TLS error (check_tls_errors_co), restarting
16:30:34 openvpn: TLS Error: TLS handshake failed
16:30:34 openvpn: TLS Error: TLS object -> incoming plaintext read error
16:30:34 openvpn: TLS_ERROR: BIO read tls_read_plaintext error
16:30:34 openvpn: OpenSSL: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed
16:30:34 openvpn: VERIFY ERROR: depth=1, error=unable to get local issuer certificate: C=SE, ST=Gotaland, O=Amagicom AB, OU=Mullvad, CN=Mullvad Transition-Intermediate CA v1, emailAddress=security@mullvad.net
16:25:28 openvpn: Fatal TLS error (check_tls_errors_co), restarting
16:25:28 openvpn: TLS Error: TLS handshake failed
16:25:28 openvpn: TLS Error: TLS object -> incoming plaintext read error
16:25:28 openvpn: TLS_ERROR: BIO read tls_read_plaintext error
16:25:28 openvpn: OpenSSL: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed
16:25:28 openvpn: VERIFY ERROR: depth=1, error=unable to get local issuer certificate: C=SE, ST=Gotaland, O=Amagicom AB, OU=Mullvad, CN=Mullvad Transition-Intermediate CA v1, emailAddress=security@mullvad.net
16:20:22 openvpn: recv_socks_reply: TCP port read timeout expired: Operation now in progress (errno=115)
16:15:17 openvpn: Fatal TLS error (check_tls_errors_co), restarting
16:15:17 openvpn: TLS Error: TLS handshake failed
16:15:17 openvpn: TLS Error: TLS object -> incoming plaintext read error
16:15:17 openvpn: TLS_ERROR: BIO read tls_read_plaintext error
16:15:17 openvpn: OpenSSL: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed
16:15:17 openvpn: VERIFY ERROR: depth=1, error=unable to get local issuer certificate: C=SE, ST=Gotaland, O=Amagicom AB, OU=Mullvad, CN=Mullvad Transition-Intermediate CA v1, emailAddress=security@mullvad.net
16:10:13 openvpn: Fatal TLS error (check_tls_errors_co), restarting
16:10:13 openvpn: TLS Error: TLS handshake failed
16:10:13 openvpn: TLS Error: TLS object -> incoming plaintext read error
16:10:13 openvpn: TLS_ERROR: BIO read tls_read_plaintext error
16:10:13 openvpn: OpenSSL: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed
16:10:13 openvpn: VERIFY ERROR: depth=1, error=unable to get local issuer certificate: C=SE, ST=Gotaland, O=Amagicom AB, OU=Mullvad, CN=Mullvad Transition-Intermediate CA v1, emailAddress=security@mullvad.net
16:08:18 logger:
16:05:07 openvpn: Fatal TLS error (check_tls_errors_co), restarting
15:38:41 wpa_supplicant: bgscan simple: Failed to enable signal strength monitoring
15:38:40 openvpn: TCP: connect to [AF_INET]127.0.0.1:9150 failed: Connection refused
15:38:36 smartd: Device: /dev/sde [SAT], no ATA CHECK POWER STATUS support, ignoring -n Directive
15:38:35 openvpn: TCP: connect to [AF_INET]127.0.0.1:9150 failed: Connection refused :)