ApiError HTTP 404 not found

I have configured latest version of metrics-reporter-prometheus[3.0.0] plugin for graylog server which is hosted on docker setup,the plugin is working fine for graylog version 3.0.0 but for version 3.0.1 it's throwing following exception when i try to access end points[/api/plugins/org.graylog.plugins.metrics.prometheus/metrics]
{
type: "ApiError",
message: "HTTP 404 Not Found"
}
Any work around to resolve this thing.