Error with connection.send

[tkurki]

1239162-Dec 8 14:25:33 Signal_K sea_vu_play[383]: /home/pi/signalk-server-node/node_modules/signalk-cloud/index.js:395
1239274-Dec 8 14:25:33 Signal_K sea_vu_play[383]: connection.send(deltaString, function(error) {
1239368-Dec 8 14:25:33 Signal_K sea_vu_play[383]: ^
1239427-Dec 8 14:25:33 Signal_K sea_vu_play[383]: TypeError: Cannot read property 'send' of null
1239517-Dec 8 14:25:33 Signal_K sea_vu_play[383]: at Timeout.sendStatic (/home/pi/signalk-server-node/node_modules/signalk-cloud/index.js:395:15)
1239660-Dec 8 14:25:33 Signal_K sea_vu_play[383]: at ontimeout (timers.js:386:11)
1239739-Dec 8 14:25:33 Signal_K sea_vu_play[383]: at tryOnTimeout (timers.js:250:5)
1239820-Dec 8 14:25:33 Signal_K sea_vu_play[383]: at Timer.listOnTimeout (timers.js:214:5)