There was no issue until 2 days back. If you can suggest anything to unblock this situation it would be really helpful.
Yesterday one of the linked proxy had full disk storage so post increasing the space i just unblocked indexes using command - curl -XPUT -H "Content-Type: application/json" http://localhost:9200/_all/_settings -d '{"index.blocks.read_only_allow_delete": null}'
But this issue is happening on the server afterwards.