This seems to be your issue:
2023-02-13 08:56:48 VERIFY ERROR: depth=0, error=CA signature digest algorithm too weak: C=US, ST=VPN, L=VPN, O=VPN, OU=VPN, CN=VPN, name=VPN, emailAddress=VPN, serial=1
2023-02-13 08:56:48 OpenSSL: error:0A000086:SSL routines::certificate verify failed
2023-02-13 08:56:48,838 DEBG 'start-script' stdout output:
2023-02-13 08:56:48 TLS_ERROR: BIO read tls_read_plaintext error
2023-02-13 08:56:48 TLS Error: TLS object -> incoming plaintext read error
2023-02-13 08:56:48 TLS Error: TLS handshake failed
It looks like your vpn provider is issuing a week cert, you need to get a updated one from your vpn provider.