Courier Fetch: 5 of 10 shards failed

Kibana Error: Courier Fetch: 5 of 10 shards failed.

See what is going on es logs. I've faced this problem recently and on my es logs i was getting te following error: MaxBytesLengthExceededException

More details at:

Also please provide more information, your post contains absolutely nothing useful other than an error message.

Are you asking for help or are you just telling us about your errors?

I am running elasticseach service of aws. im not sure what exactly happening. now even worst page itself is not loading