Sporadic "Failed to send message:"

When building some product, for the past 5 conversations I have encountered this failure "Failed to send message:" and can't even send a message

shelley version

$ shelley version
Warning: failed to parse build-info.json: json: cannot unmarshal string into Go struct field .timestamp of type int64
{
  "commit": "64424ea9729f2ee1e82cd7af53fba7438bc9fd69",
  "commit_time": "2025-12-26T22:50:19Z"
}

Kindly /cc-ing @josharian