Plugin cannot trigger a parameterized build
When a job is configured to perform parameterized builds, the plugin fails to trigger a build.
The request uses the 'build' action that returns the list of the parameters with HTTP status 405. Parameterized builds can be triggered with the 'buildWithParameters' action (which, unfortunately doesn't work with non-parameterized builds).
Unless Hudson/Jenkins teams provide a single action to launch both parameterized and non-parameterized builds, the plugin should be able to use the right action.