Serviço para constantemente (Bad Gateway)

Instalamos o rocletchat pelo marketplace da Digital Ocean, funcionou muito bem por quase um mês.
Porém ele passou a parar constantemente, precisando entrar e startar manualmente o serviço constantemente.

Ao pesquisar o status tenho a mensagem abaixo

Server Setup Information

  • Version of Rocket.Chat Server: 2.4.9
  • Operating System: Ubuntu 18.04
  • Number of Running Instances:
  • DB Replicaset Oplog:
  • NodeJS Version: v8.17.0
  • MongoDB Version: 4.0.3

Any additional Information

ao consultar o status do serviço (quando parado) tenho a seguinte mensagem

rocketchat.service - The Rocket.Chat server
Loaded: loaded (/lib/systemd/system/rocketchat.service; enabled; vendor preset: enabled)
Active: failed (Result: signal) since Fri 2020-06-05 21:20:04 UTC; 15h ago
Process: 1763 ExecStart=/usr/bin/node /opt/Rocket.Chat/main.js (code=killed, signal=KILL)
Main PID: 1763 (code=killed, signal=KILL)

Jun 05 21:19:19 rocketchat-markdigx rocketchat[1763]: Meteor ➔ method public-settings/get -> userId: swrTCM9MXZjaRqxz8,
Jun 05 21:19:19 rocketchat-markdigx rocketchat[1763]: Meteor ➔ method rooms/get -> userId: swrTCM9MXZjaRqxz8, arguments
Jun 05 21:19:26 rocketchat-markdigx rocketchat[1763]: Meteor ➔ method loadHistory -> userId: swrTCM9MXZjaRqxz8, argumen
Jun 05 21:19:26 rocketchat-markdigx rocketchat[1763]: Meteor ➔ method canAccessRoom -> userId: swrTCM9MXZjaRqxz8, argum
Jun 05 21:19:28 rocketchat-markdigx rocketchat[1763]: Meteor ➔ method canAccessRoom -> userId: swrTCM9MXZjaRqxz8, argum
Jun 05 21:19:28 rocketchat-markdigx rocketchat[1763]: Meteor ➔ method getRoomRoles -> userId: swrTCM9MXZjaRqxz8, argume
Jun 05 21:19:32 rocketchat-markdigx rocketchat[1763]: Meteor ➔ method subscriptions/get -> userId: swrTCM9MXZjaRqxz8, a
Jun 05 21:19:41 rocketchat-markdigx rocketchat[1763]: Meteor ➔ method readMessages -> userId: swrTCM9MXZjaRqxz8, argume
Jun 05 21:20:04 rocketchat-markdigx systemd[1]: rocketchat.service: Main process exited, code=killed, status=9/KILL
Jun 05 21:20:04 rocketchat-markdigx systemd[1]: rocketchat.service: Failed with result ‘signal’.