Working with YubiKey?

Hi

My company has recently integrated YubiKey into our internal gitlab system, with Open Directory.

I use a 3rd party git gui, GitX, to connect to our gitlab server, https://gitlab.corp.mycompanyname.com/

Since adding YubiKey, GitX is asking for my password for SSH key “id_rsa”.

What password may i enter here?

Neither my Open Directory password, nor my Yubikey pin work.

thx