TLS handshake error after restoring backup onto new server

Pritunl Pritunl VPN
1

I had an older pritunl server(al2) which I have backed up and restore to a new al2023. I’ve edited some settings, okta+duo work, even pritunl is working just fine. In the web browser server logs I don’t see any error message.
But when I ssh to the server and follow pritunl logs, I’m constantly getting this errors:
TLS handshake error from xx.xx.xx.xx:9218: EOF
…
I have an enterprise licence and I’ve switched Lets Encrypt Domain from old server to the new one.
Any help would be appreciated.
Thank you

edit:
errors that I’m seeing are coming from journalctl command, if I cat pritunl.log, I don’t see those TLS errors.

2

It likely has the unsupported Lets Encrypt keys and API. You will need to either update the server or manually create the certificate outside of Pritunl and configure it in the top right settings under advanced. Run sudo pritunl reset-ssl-cert if the server web console is inaccessible due to SSL errors. Chrome may also block accessing the domain without a valid SSL certificate, if that occurs use the IP address of the server instead.

3

Problem was with the Global Accelerator doing health checks on TCP 443.