Exception in thread "main" java.lang.RuntimeException: java.net.UnknownHostException: stream.watsonplatform.net
    at com.ibm.watson.developer_cloud.service.WatsonService$1.execute(WatsonService.java:182)
    at com.costaisa.app.api.test.ibm.watson.TestIBMWatson.testSpeechToText(TestIBMWatson.java:76)
    at com.costaisa.app.api.test.ibm.watson.TestIBMWatson.main(TestIBMWatson.java:37)
Caused by: java.net.UnknownHostException: stream.watsonplatform.net
    at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1276)
    at java.net.InetAddress.getAllByName(InetAddress.java:1192)
    at java.net.InetAddress.getAllByName(InetAddress.java:1126)
    at okhttp3.Dns$1.lookup(Dns.java:39)
    at okhttp3.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:173)
    at okhttp3.internal.http.RouteSelector.nextProxy(RouteSelector.java:139)
    at okhttp3.internal.http.RouteSelector.next(RouteSelector.java:81)
    at okhttp3.internal.http.StreamAllocation.findConnection(StreamAllocation.java:172)
    at okhttp3.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:123)
    at okhttp3.internal.http.StreamAllocation.newStream(StreamAllocation.java:93)
    at okhttp3.internal.http.HttpEngine.connect(HttpEngine.java:296)
    at okhttp3.internal.http.HttpEngine.sendRequest(HttpEngine.java:248)
    at okhttp3.RealCall.getResponse(RealCall.java:243)
    at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:201)
    at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:163)
    at okhttp3.RealCall.execute(RealCall.java:57)
    at com.ibm.watson.developer_cloud.service.WatsonService$1.execute(WatsonService.java:179)
    ... 2 more