OpenShift Web Hook MethodNotAllowed Error

Issue

• While building the web hooks in the OpenShift environment, seeing "MethodNotAllowed" error. Below is the error message:

$ curl https://openshift.example.com:443/oapi/v1/namespaces/myproject/buildconfigs/mybuildconfig/webhooks/a300e8f539aefce2/generic
{
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {},
  "status": "Failure",
  "message": "the server does not allow this method on the requested resource",
  "reason": "MethodNotAllowed",
  "details": {},
  "code": 405
}

With the configuration:

spec:
  triggers:
    -
      type: Generic
      generic:
        secret: a300e8f539aefce2
    -
      type: GitHub
      github:
        secret: 5a1457f04e7990fe
    -
      type: ImageChange
      imageChange:
        lastTriggeredImageID: 'registry.access.redhat.com/jboss-eap-6/eap64-openshift:1.2'
    -
      type: ConfigChange