Unexpected error occurred while trying to refresh cronofy access token

Cronofy

2017-02-14 00:00:10,103 ERROR [pool-4-thread-1] ?.?(?:?) - Unexpected error occurred in scheduled task. 
javax.ws.rs.ProcessingException: java.net.UnknownHostException: api.cronofy.com
	at org.glassfish.jersey.client.internal.HttpUrlConnector.apply(HttpUrlConnector.java:287)
	at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:255)
	at org.glassfish.jersey.client.JerseyInvocation$3.call(JerseyInvocation.java:722)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:444)
	at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:718)
	at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:459)
	at org.glassfish.jersey.client.JerseyInvocation$Builder.post(JerseyInvocation.java:355)
	at com.sfl.cronofy.api.client.impl.CronofyClientImpl.updateAccessToken(CronofyClientImpl.java:120)
	at com.sfl.coolmonkey.company.scheduler.job.cronofy.RefreshCronofyAccessTokenJobImpl.lambda$run$0(RefreshCronofyAccessTokenJobImpl.java:57)
	at java.util.ArrayList.forEach(ArrayList.java:1249)
	at com.sfl.coolmonkey.company.scheduler.job.cronofy.RefreshCronofyAccessTokenJobImpl.run(RefreshCronofyAccessTokenJobImpl.java:56)
	at com.sfl.coolmonkey.company.scheduler.trigger.cronofy.RefreshCronofyAccessTokenJobTriggerImpl.run(RefreshCronofyAccessTokenJobTriggerImpl.java:42)
	at sun.reflect.GeneratedMethodAccessor108.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65)
	at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
	at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.UnknownHostException: api.cronofy.com
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:589)
	at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:668)
	at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
	at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
	at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
	at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
	at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1105)
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:999)
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
	at sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(HttpURLConnection.java:1283)
	at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1258)
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:250)
	at org.glassfish.jersey.client.internal.HttpUrlConnector$4.getOutputStream(HttpUrlConnector.java:385)
	at org.glassfish.jersey.message.internal.CommittingOutputStream.commitStream(CommittingOutputStream.java:200)
	at org.glassfish.jersey.message.internal.CommittingOutputStream.commitStream(CommittingOutputStream.java:194)
	at org.glassfish.jersey.message.internal.CommittingOutputStream.write(CommittingOutputStream.java:228)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$UnCloseableOutputStream.write(WriterInterceptorExecutor.java:299)
	at com.fasterxml.jackson.core.json.UTF8JsonGenerator._flushBuffer(UTF8JsonGenerator.java:2003)
	at com.fasterxml.jackson.core.json.UTF8JsonGenerator.flush(UTF8JsonGenerator.java:1019)
	at com.fasterxml.jackson.databind.ObjectWriter.writeValue(ObjectWriter.java:891)
	at com.fasterxml.jackson.jaxrs.base.ProviderBase.writeTo(ProviderBase.java:635)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
	at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
	at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
	at org.glassfish.jersey.client.ClientRequest.doWriteEntity(ClientRequest.java:517)
	at org.glassfish.jersey.client.ClientRequest.writeEntity(ClientRequest.java:499)
	at org.glassfish.jersey.client.internal.HttpUrlConnector._apply(HttpUrlConnector.java:388)
	at org.glassfish.jersey.client.internal.HttpUrlConnector.apply(HttpUrlConnector.java:285)
	... 27 common frames omitted