Log is swarm with "Giving up on search" "No such index"

the log file is receiving tons of such errors after some indexes were closed and deleted a month ago, we haven't removed any after that but the error persists, what can I do about it?

Please provide more details. Which version of Elasticsearch are you using? What is your use case? What is the size and topology of your cluster? What exactly does the logs look like (please provide some context around the error messages)? What is the full error message?