Desde hace unos dias no puedo levanta o no se que problema presenta el servicio de syncrony, por lo cual tuvimos que cambiar a "modo limitado" el modo de edicion colavorativa
Adjunto log de errores e impresion de pantalla.

log:
2017-12-27 07:01:00,562 ERROR [Long running task: Restart Synchrony Task] [plugins.synchrony.tasks.AbstractConfigLongRunningTask] runInternal An error occurred when running a Synchrony ConfigLongRunningTask
-- url: /rest/synchrony-interop/restart | referer: http://nexaserver:8090/admin/confluence-collaborative-editor-plugin/configure.action | traceId: 40744cbf70c3d20e | userName: admin
java.lang.NumberFormatException: For input string: " "
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:569)
at java.lang.Integer.parseInt(Integer.java:615)
at com.atlassian.confluence.plugins.synchrony.utils.SynchronyProcessUtil.killRunningSynchronyProcess(SynchronyProcessUtil.java:49)
at com.atlassian.confluence.plugins.synchrony.bootstrap.DefaultSynchronyProcessManager.startup(DefaultSynchronyProcessManager.java:521)
at com.atlassian.confluence.plugins.synchrony.bootstrap.DefaultSynchronyProcessManager.lambda$restart$15(DefaultSynchronyProcessManager.java:734)
at com.atlassian.util.concurrent.Promises$Of$1.apply(Promises.java:263)
at com.atlassian.util.concurrent.Promises$2.onSuccess(Promises.java:185)
at com.google.common.util.concurrent.Futures$6.run(Futures.java:1319)
at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:457)
at com.google.common.util.concurrent.ExecutionList.executeListener(ExecutionList.java:156)
at com.google.common.util.concurrent.ExecutionList.execute(ExecutionList.java:145)
at com.google.common.util.concurrent.JdkFutureAdapters$ListenableFutureAdapter$1.run(JdkFutureAdapters.java:177)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)