Distributor errors in mimir

[RaviHari]

Hi I am seeing an unexpected issue on mimir distributor.. and I am running mimir 2.12.0 version:

ts=2024-07-04T17:33:53.373004163Z caller=push.go:171 level=error user=anonymous msg="push error" err="DoBatch: InstancesCount <= 0"

this is happening continuously inspite multiple restarts
any reasons why the would mimir run into this state
I see all ingesters are up and running