I have set up a simple project in gitlab with one branch
I have set up a merge build job as described
I press test settings on gitlab ci page of gitlab settings for testmerge project
This error comess through on jenkins

Test-gitmerge triggered.
Aug 28, 2014 9:09:49 AM WARNING com.dabsquared.gitlabjenkins.GitLabPushTrigger$2 createActions
Could not fetch source project's data from Gitlab. (java.net.MalformedURLException: no protocol: /api/v3/projects/137: no protocol: /api/v3/projects/137)