java.lang.NullPointerException: null

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java.lang.NullPointerException: null
at de.codecentric.boot.admin.notify.filter.FilteringNotifier.notify(FilteringNotifier.java:52)
at de.codecentric.boot.admin.notify.RemindingNotifier.notify(RemindingNotifier.java:44)
at de.codecentric.boot.admin.notify.NotifierListener.onClientApplicationEvent(NotifierListener.java:16)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.springframework.context.event.ApplicationListenerMethodAdapter.doInvoke(ApplicationListenerMethodAdapter.java:253)
at org.springframework.context.event.ApplicationListenerMethodAdapter.processEvent(ApplicationListenerMethodAdapter.java:174)
at org.springframework.context.event.ApplicationListenerMethodAdapter.onApplicationEvent(ApplicationListenerMethodAdapter.java:137)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:166)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:138)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:382)
at de.codecentric.boot.admin.registry.ApplicationRegistry.register(ApplicationRegistry.java:82)
at de.codecentric.boot.admin.registry.web.RegistryController.register(RegistryController.java:57)
at de.codecentric.boot.admin.registry.web.RegistryController$$FastClassBySpringCGLIB$$2753636d.invoke()

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