Servers are inaccessible

Suddenly all of my Rollbase servers are inaccessible.

A few hours ago they were working fine.

I got an automated email from one server that the db is down.

Tried to login and I got the error in the login screen :

[Rollbase][SQLServer JDBC Driver]SSL handshake failed: Unsupported curveId: 29

Also in the localhost.log there is the error:

01-Jul-2018 13:29:52.620 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.loadOnStartup Servlet [Starter] in web application [/master] threw load() exception
java.sql.SQLNonTransientConnectionException: [Rollbase][SQLServer JDBC Driver]SSL handshake failed: Unsupported curveId: 29

The servers are running on Ubuntu 16.04 server VMs in Microsoft Azure and with SQL Azure databases.

I use the latest version of Rollbase in all servers.

I checked the databases and they are up and running.