Used to work but now getting 0 byte recieved. Attempting re-connect...

[Anthony Uccello]

Hi

I had this working a couple months ago. I've changed nothing but now when I start up the server I get this issue:

[E 171114 13:16:21 apns:242] Attempting re-connect...
[W 171114 13:16:21 apns:208] app[0] is offline. Reconnected?: 1
[E 171114 13:16:21 apns:238] 0 byte recieved.
[E 171114 13:16:21 apns:242] Attempting re-connect...
[W 171114 13:16:21 apns:208] app[0] is offline. Reconnected?: 1
[E 171114 13:16:21 apns:238] 0 byte recieved.
[E 171114 13:16:21 apns:242] Attempting re-connect...
[W 171114 13:16:21 apns:208] app[0] is offline. Reconnected?: 1
[E 171114 13:16:21 apns:238] 0 byte recieved.
[E 171114 13:16:21 apns:242] Attempting re-connect...
[W 171114 13:16:21 apns:208] app[0] is offline. Reconnected?: 1
[E 171114 13:16:21 apns:238] 0 byte recieved.

I can still access dashboard and stop the server in this state, when I do I get this message:

[I 171114 13:23:59 settings:167] Shutdown APNS
[I 171114 13:23:59 web:1908] 302 POST /applications/app/settings (127.0.0.1) 3.36ms
[W 171114 13:23:59 apns:208] app[0] is offline. Reconnected?: 0
[E 171114 13:23:59 apns:253] response must be a 6-byte binary string.
[I 171114 13:23:59 web:1908] 200 GET /applications/app/settings (127.0.0.1) 32.10ms
[I 171114 13:23:59 web:1908] 200 GET /static/css/bootstrap.min.css?v=282663d1dc8a60dcef58304c09005aa5 (127.0.0.1) 6.23ms
[I 171114 13:23:59 web:1908] 200 GET /static/css/custom.css?v=017d900e58f867a1f61209695e8f8bf1 (127.0.0.1) 1.06ms
[I 171114 13:23:59 web:1908] 200 GET /static/css/dashboard.css?v=6c04d16dac1c8f1e0fc66ac205c0e44a (127.0.0.1) 0.83ms

And ideas why it is not connecting?