message: Log broadcast error as an error instead of a warning
diff: @@ -87,7 +87,7 @@ impl Pool {
  .filter_map(|connection| connection.listener.as_mut())
  .for_each(|listener| {
  if let Err(error) = listener.try_send(event) {
  - log::warn!(
  + log::error!(
  "Error sending event to subscription: {:?}",
  error
  );
  