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java.lang.NullPointerException: 	at org.axonframework.commandhandling.model.AbstractMessageHandler.(AbstractMessageHandler.java:45)	at org.axonframework.commandhandling.model.inspection.MethodEventHandlerDefinition$MethodMessageHandler.(MethodEventHandlerDefinition.java:50)	at org.axonframework.commandhandling.model.inspection.MethodEventHandlerDefinition.createHandler(MethodEventHandlerDefinition.java:39)	at org.axonframework.common.annotation.AnnotatedHandlerInspector.lambda$initializeMessageHandlers$138(AnnotatedHandlerInspector.java:78)	at java.util.ArrayList.forEach(ArrayList.java:1249)	at org.axonframework.common.annotation.AnnotatedHandlerInspector.initializeMessageHandlers(AnnotatedHandlerInspector.java:77)	at org.axonframework.common.annotation.AnnotatedHandlerInspector.initialize(AnnotatedHandlerInspector.java:67)	at org.axonframework.common.annotation.AnnotatedHandlerInspector.lambda$createInspector$136(AnnotatedHandlerInspector.java:53)	at java.util.HashMap.computeIfAbsent(HashMap.java:1118)	at org.axonframework.common.annotation.AnnotatedHandlerInspector.createInspector(AnnotatedHandlerInspector.java:53)	at org.axonframework.common.annotation.AnnotatedHandlerInspector.inspectType(AnnotatedHandlerInspector.java:47)	at org.axonframework.eventhandling.AnnotationEventListenerAdapter.(AnnotationEventListenerAdapter.java:56)	at org.axonframework.eventhandling.AnnotationEventListenerAdapter.(AnnotationEventListenerAdapter.java:41)	at org.axonframework.eventhandling.SimpleEventHandlerInvoker.lambda$new$41(SimpleEventHandlerInvoker.java:39)	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)	at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)	at org.axonframework.eventhandling.SimpleEventHandlerInvoker.(SimpleEventHandlerInvoker.java:42)	at org.axonframework.eventhandling.SimpleEventHandlerInvoker.(SimpleEventHandlerInvoker.java:34)	at org.axonframework.quickstart.RunAnnotatedAggregate.main(RunAnnotatedAggregate.java:59)	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:498)	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)