Interrupted system call, INTERNAL_SERVER_ERROR during Elasticsearch snapshot

Hi,
I am using ES 7.8.0 version and sometimes my snapshot is failing with below errors. What could be the reason for this?

"failures\":[{\"index\":\"operation-2022.12.23\",\"index_uuid\":\"operation-2022.12.23\",\"shard_id\":7,\"reason\":\"IndexShardSnapshotFailedException[Failed to finalize snapshot creation [es-snapshot-2023.01.19-06:37:11/JJq2KTDGSR2J9-g4_PajOA] with shard index [index-AQmlBal0Qk6JmELu3JXOvA]]; nested: FileSystemException[/elasticsearch-backup/backup/indices/ZPKSSYgJSSi1ubSps6tJpQ/7/pending-index-AQmlBal0Qk6JmELu3JXOvA-rn1eBeoTQ5yyYS1YqavktQ -> /elasticsearch-backup/backup/indices/ZPKSSYgJSSi1ubSps6tJpQ/7/index-AQmlBal0Qk6JmELu3JXOvA: Interrupted system call]\",\"node_id\":\"VzkrvVJLSTuajONBwXKmtg\",\"status\":\"INTERNAL_SERVER_ERROR\"}],\"shards\":{\"total\":597,\"failed\":1,\"successful\":596}}}}