Java error in openHAB cloud client

Why gives the openHAB cloud java errors ? I know that the connection to the openHAB cloud is interupted a few times each day, but I think java errors are not necesary. Here an excerpt from openhab.log.
I am using the 2.3.0 SNAPSHOT on Windows server 2008.

Gert

2018-01-07 18:07:40.569 [ERROR] [io.openhabcloud.internal.CloudClient] - Socket.IO error: {}
io.socket.engineio.client.EngineIOException: websocket error
at io.socket.engineio.client.Transport.onError(Transport.java:71) [256:org.openhab.io.openhabcloud:2.3.0.201801010944]
at io.socket.engineio.client.transports.WebSocket.access$500(WebSocket.java:28) [256:org.openhab.io.openhabcloud:2.3.0.201801010944]
at io.socket.engineio.client.transports.WebSocket$2$5.run(WebSocket.java:150) [256:org.openhab.io.openhabcloud:2.3.0.201801010944]
at io.socket.thread.EventThread$2.run(EventThread.java:80) [256:org.openhab.io.openhabcloud:2.3.0.201801010944]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:?]
at java.lang.Thread.run(Unknown Source) [?:?]
Caused by: java.io.EOFException
at okio.RealBufferedSource.require(RealBufferedSource.java:59) ~[?:?]
at okio.RealBufferedSource.readByte(RealBufferedSource.java:72) ~[?:?]
at okhttp3.internal.ws.WebSocketReader.readHeader(WebSocketReader.java:115) ~[?:?]
at okhttp3.internal.ws.WebSocketReader.processNextFrame(WebSocketReader.java:104) ~[?:?]
at okhttp3.internal.ws.RealWebSocket.readMessage(RealWebSocket.java:97) ~[?:?]
at okhttp3.ws.WebSocketCall.createWebSocket(WebSocketCall.java:152) ~[?:?]
at okhttp3.ws.WebSocketCall.access$000(WebSocketCall.java:41) ~[?:?]
at okhttp3.ws.WebSocketCall$1.onResponse(WebSocketCall.java:97) ~[?:?]
at okhttp3.RealCall$AsyncCall.execute(RealCall.java:126) ~[?:?]
at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) ~[?:?]
… 3 more
2018-01-07 18:07:40.584 [INFO ] [io.openhabcloud.internal.CloudClient] - Disconnected from the openHAB Cloud service (UUID = 2c004f42-8052-41b5-a575-62ebc5892b64, base URL = http://localhost:8080)
2018-01-07 18:08:25.425 [INFO ] [io.openhabcloud.internal.CloudClient] - Connected to the openHAB Cloud service (UUID = 2c004f42-8052-41b5-a575-62ebc5892b64, base URL = http://localhost:8080)