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    This is a bug that happens in Slide in versions 4.2.0 and before. Update to 4.2.2 or further to fix it.

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GCM Service invocation failed (reason: Error while invoking request)
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via Stack Overflow by Unknown author, 2 years ago
GCM Service invocation failed (reason: notification_key already exists)
java.net.UnknownHostException: android.googleapis.com: android.googleapis.com	at java.net.InetAddress.getAllByName0(InetAddress.java:1348)	at java.net.InetAddress.getAllByName(InetAddress.java:1257)	at java.net.InetAddress.getAllByName(InetAddress.java:1182)	at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:44)	at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:102)	at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:319)	at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:363)	at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:219)	at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)	at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86)	at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)	at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106)	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)	at com.ibm.pushworks.server.notification.gcm.GCMSender.sendToGCM(GCMSender.java:377)	at com.ibm.pushworks.server.notification.gcm.GCMSender.addTokenToAndroidKey(GCMSender.java:353)	at com.ibm.pushworks.server.notification.gcm.GCMMediator.addTokenToAndroidKey(GCMMediator.java:206)	at com.ibm.pushworks.server.core.PushServiceImpl.getNotificationKey(PushServiceImpl.java:1848)	at com.ibm.pushworks.server.core.PushServiceImpl.updateDevice(PushServiceImpl.java:658)	at com.worklight.integration.services.impl.DataAccessServiceImpl.updateDeviceToken(DataAccessServiceImpl.java:465)	at com.worklight.gadgets.serving.handler.NotificationSubscriptionHandler.doPost(NotificationSubscriptionHandler.java:126)	at com.worklight.gadgets.serving.GadgetAPIServlet.doGetOrPost(GadgetAPIServlet.java:176)	at com.worklight.gadgets.serving.GadgetAPIServlet.doPost(GadgetAPIServlet.java:133)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:595)	at com.worklight.gadgets.serving.GadgetAPIServlet.service(GadgetAPIServlet.java:116)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1275)	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:766)	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:472)	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:135)	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:89)	at com.worklight.core.auth.impl.AuthenticationFilter$1.execute(AuthenticationFilter.java:239)	at com.worklight.core.auth.impl.AuthenticationServiceBean.accessResource(AuthenticationServiceBean.java:76)	at com.worklight.core.auth.impl.AuthenticationFilter.doFilter(AuthenticationFilter.java:246)	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:192)	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:86)	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:975)	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1097)	at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:81)	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:912)	at com.ibm.ws.webcontainer.osgi.DynamicVirtualHost$2.run(DynamicVirtualHost.java:262)	at com.ibm.ws.http.dispatcher.internal.channel.HttpDispatcherLink$TaskWrapper.run(HttpDispatcherLink.java:938)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1156)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:626)	at java.lang.Thread.run(Thread.java:780)