Why am i having an error to configure my git connection in NeoLoad using ssh protocol with public/private key?

I get that error in NeoLoad when i test the connection. This is a subset of the error stack trace:

org.eclipse.jgit.api.errors.TransportException: ssh://git@mygitserver.com:22/neoload/neoload.git: invalid privatekey: [B@115b4563
                at org.eclipse.jgit.api.LsRemoteCommand.execute(LsRemoteCommand.java:222)
                at org.eclipse.jgit.api.LsRemoteCommand.call(LsRemoteCommand.java:161)
                at com.neotys.nl.k.a.a.r.c(r.java:254)
                at com.neotys.nl.k.a.a.r.b(r.java:144)
                at com.neotys.nl.k.a.a.r.a(r.java:140)
                at com.neotys.nl.k.a.p.a(p.java:34)
                at com.neotys.nl.gui.h.bj.z(bj.java:805)
                at com.neotys.nl.gui.h.bj.access$000(bj.java:56)
                at com.neotys.nl.gui.h.aS.run(aS.java:158)
              

If i use the same key pair with git bash i'm able to clone my repository so i know that they are working.