heroku[logplex]: Error L10 (output buffer overflow): drain
.
heroku[logplex]: Error L10 (output buffer overflow): drain
.
heroku[logplex]: Error L10 (output buffer overflow): drain
.
heroku[logplex]: Error L10 (output buffer overflow): drain
.
heroku[logplex]: Error L10 (output buffer overflow): drain
.
heroku[logplex]: Error L10 (output buffer overflow): drain
.
heroku[logplex]: Error L10 (output buffer overflow): drain
.
heroku[logplex]: Error L10 (output buffer overflow): drain
.
heroku[logplex]: Error L10 (output buffer overflow): drain
.

I get a ton of these error in my logs even when my dyno is offline.
Does someone have any idea of where there from?
I finally deleted and recreated the app