404 /rest/sitemaps from openhab android app


I upgrade from openhab 1.6 to 1.7.1 and now my http interface is working with the old configuration but when i use the op;enhab android app i get the message “HTTP Error:ProxySerlet: /rest/sitemaps”.

the browsers responds to /rest/sitemaps:

Problem accessing /rest/sitemaps. Reason:

ProxyServlet: /rest/sitemaps

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I got the same problem.
Can not find out why??

I downgraded the java version from oracle java 9 to java 8 which solved the problem

nice tip man, thank
I solve that with java 1.6

reviving an oldish thread. After a few days of running fine, I got the same error when launching the android app (through web browser to ip works fine).

The openhab.log shows:
[ERROR] [.myopenhab.internal.MyOHClient] - Socket.IO error: io.socket.engineio.client.EngineIOException: websocket error

not sure what this is.