Backoffice Cannot reset cockpit-config.xml

[jajm]

If i try to reset the cockpit-config.xml file from the Application orchestrator, nothing happens. Its loading forever. And if it try to look at the File by clicking "Show cockpit-config.xml" i get this error:

10:12:17,845 13-02-2019 [ hybrisHTTP28] ERROR [.zkoss.zk.ui.impl.UiEngineImpl]
java.lang.IllegalMonitorStateException: attempt to unlock read lock, not locked by current thread at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.unmatchedUnlockException(ReentrantReadWriteLock.java:444) ~[?:1.8.0_111] at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.tryReleaseShared(ReentrantReadWriteLock.java:428) ~[?:1.8.0_111] at java.util.concurrent.locks.AbstractQueuedSynchronizer.releaseShared(AbstractQueuedSynchronizer.java:1341) ~[?:1.8.0_111] at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.unlock(ReentrantReadWriteLock.java:881) ~[?:1.8.0_111] at com.hybris.cockpitng.core.config.impl.LoggingReentrantReadWriteLock$LoggingWReadLock.unlock(LoggingReentrantReadWriteLock.java:90) ~[cockpitcore-6.2.0.28-RC1.jar:?] at com.hybris.cockpitng.core.config.impl.DefaultCockpitConfigurationService.getConfigAsString(DefaultCockpitConfigurationService.java:1454) ~[cockpitcore-6.2.0.28-RC1.jar:?] at com.hybris.cockpitng.adminmode.CockpitAdminComposer.showCockpitConfigXml(CockpitAdminComposer.java:354) ~[cockpitadmin-6.2.0.28-RC1.jar:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_111] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_111] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_111] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_111] at com.hybris.cockpitng.util.ViewAnnotationAwareComposer.invokeListenerMethod(ViewAnnotationAwareComposer.java:110) ~[cockpitframework-6.2.0.28-RC1.jar:?] at com.hybris.cockpitng.util.ViewAnnotationAwareComposer.lambda$applyEventListener$0(ViewAnnotationAwareComposer.java:128) ~[cockpitframework-6.2.0.28-RC1.jar:?]

Hybrisversion: 6.2.0.28