Issue

Context

• Gitlab plugin version: 1.5.3
• Gitlab version: 10.5.6
• Jenkins version: 2.112
• Job type: Multibranch Pipeline

Logs & Traces

In the jenkins side:
HTTP ERROR 404 Problem accessing /project/universe/. Reason: Not Found Powered by Jetty:// 9.4.z-SNAPSHOT

In the gitlab side:
HTTP ERROR 500 Whoops, something went wrong on our end.

Problem description

• In jenkins, create a multibranch project named universe in a folder
• In jenkins, create a multibranch project named universe in the root
• Try to setup the webhook in gitlab with end-point below:
  • https://jenkins/project/universe
  • https://jenkins/project/folder/universe
• Got the errors above