message: Use req.originalUrl instead of req.path
  When reporting the current URL, we should use `originalUrl` over `path`.
  `path` does not include the mount point while `originalUrl` does.
diff: @@ -24,7 +24,7 @@ export function makeMiddleware(airbrake: Notifier) {
  export function makeErrorHandler(airbrake: Notifier) {
  return function airbrakeErrorHandler(err: Error, req, _res, next): void {
  - const url = req.protocol + '://' + req.headers.host + req.path;
  + const url = req.protocol + '://' + req.headers.host + req.originalUrl;
  const notice: any = {
  error: err,
  context: {
  