Promtail Heroku L10 Errors

We have a number of app with promtail log drains attached in heroku. None of these apps produce a lot of logs but our promtail app seems to run in issues. Here is heroku’s take on it.

The L10 logs are seen when the logging receiver service (your logging addon/external service) is unable to capture logs at the rate they're being generated. In that case, when logs are dropped, you see an L10 error there. This isn't about the ability of the Heroku Logplex itself.he L10 logs are seen when the logging receiver service (your logging addon/external service) is unable to capture logs at the rate they're being generated. In that case, when logs are dropped, you see an L10 error there. This isn't about the ability of the Heroku Logplex itself.

So next question is there config to allow promtail to receive more logs? promtail is in a docker image with no extra config applied.

Thanks, Nigel.