PydioSync - Client offered an unsupported, maximum protocol version of 301

Hello.
I installed pydio cells with a self-sign certificate for testing purposes. The web client works fine!
I want to use pydio sync for osx, however when I want to login and have Trust SSl certificate checked I get the following error on my server

INFO	http: TLS handshake error from _xx.xx.xx.xx:xxxx_ tls: client offered an unsupported, maximum protocol version of 301

I am on macOS Sierra (10.12.6).
Pydio Cells 1.0.4
PydioSync 1.2.8

Cheers!

Hi,
could you test our latest work in progress version and give us the feedback about your case, it would be helpful.

Here’s the link to the latest builds that we are working on
https://download.pydio.com/pub/pydio-sync/develop/packages/

Hello,
thank you for your reply.

It is working with the latest macOS version from 2018-09-10 18:32.

Thank you!