GitLab plugin server connection

Hello,
I am trying to use GitLab plugin from link: https://github.com/xebialabs-community/xlr-gitlab-plugin
I have a problem with server connection. My test Gitlab server is public accessible with API token generated, I attached pic with configuration.
Error is like that:
***Can’t connect to Gitlab Server. ***
Exception: Failed to connect to GitLab Server. Status: 406
Any ideas?

Hi Kuba,

seems you did not set the authenticatio method, please not, if you choosed token, yo do not need to provide username/pwd combination.

Hi Mzieger,
thanks for reply. I have transferred my git repo to local GitLab server (docker image) and followed Your tips- I set auth metod and also left just personal API Token. I didn’t worked…
I can access GitLab via web browser, but Xebia push this error:
java.net.SocketException: java.net.SocketException: Connection reset
or
org.apache.http.client.ClientProtocolException: org.apache.http.client.ClientProtocolException
while url is: 192.168.1.251
or
Exception: Failed to connect to GitLab Server. Status: 406
while url is: http://192.168.1.251