tendermint: Node crashes with "Failed to write response"

Tendermint version (use tendermint version or git rev-parse --verify HEAD if installed from source):

tendermint: ""
abci: 0.17.0
blockprotocol: 11
p2pprotocol: 8

ABCI app (name for built-in, URL for self-written if it’s publicly available): Desmos v0.15.1

Environment:

• OS (e.g. from /etc/os-release):

  NAME="Ubuntu"
  VERSION="20.04.1 LTS (Focal Fossa)"
  ID=ubuntu
  ID_LIKE=debian
  PRETTY_NAME="Ubuntu 20.04.1 LTS"
  VERSION_ID="20.04"
  HOME_URL="https://www.ubuntu.com/"
  SUPPORT_URL="https://help.ubuntu.com/"
  BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
  PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
  VERSION_CODENAME=focal
  UBUNTU_CODENAME=focal
  

• Install tools:
• Others:

What happened: Yesterday, one of our chain nodes has stopped with error Failed to write response for no apparent reason. This is not the first time this happens, and we still have to identify why.

What you expected to happen:
The node should not crash

Have you tried the latest version:
No

How to reproduce it (as minimally and precisely as possible):
I have yet to know this

Logs (paste a small part showing an error (< 10 lines) or link a pastebin, gist, etc. containing more of the log file):
https://pastebin.com/rbaw6FVH

Config (you can paste only the changes you’ve made):

pruning = "nothing"