This restart fixed it and almost instantly
sudo systemctl restart emoncms_mqtt.service
LAST ENTRIES ON THE LOG FILE
2019-04-04 19:21:14.505|ERROR|feedwriter.php|Starting feedwriter script
2019-04-04 19:21:17.502|ERROR|feedwriter.php|Starting feedwriter script
2019-04-04 19:50:24.877|WARN|emoncms_mqtt.php|Not connected, retrying connection
2019-04-04 19:50:24.907|WARN|emoncms_mqtt.php|Connecting to MQTT server: Connection Accepted.: code: 0
2019-04-21 08:43:36.807|ERROR|feedwriter.php|Starting feedwriter script
2019-04-22 10:59:35.740|WARN|emoncms_mqtt.php|Not connected, retrying connection
2019-04-22 10:59:35.770|WARN|emoncms_mqtt.php|Connecting to MQTT server: Connection Accepted.: code: 0
Back in action for another 18 days?