Intermittent WARN and ERROR logs during synchronization

[aidan-kwon]

Describe the bug
During the cypress network synchronization, some WARN and ERROR logs happened.
Though the synchronization works well without any problem, we need to figure out why it happened.

How to reproduce
Synchronization

Expected behavior
No WARN and ERROR logs

Attachments

WARN[02/12,16:36:21 Z] [41] Failed to filter bodies                   peer=772b3b5ed369641d                           lenTxs=1
ERROR[02/12,16:04:28 Z] [41] Failed to send txs                        peer=0x5c0C9B3785b2aCECcaf4561a4Daee48CCE75747A peerType=1 numTxs=1   err="shutting down"

Environment (please complete the following information)

• Klaytn version: v1.7.3+acae89350c
• OS and its version Ubuntu 18.04.6 LTS
• Machine: AWS m5.4xlarge

[exalate-issue-sync]

Exalate commented: Issue Created by: aidan-kwon