java.lang.NullPointerException: null

java.lang.NullPointerException: null	at org.springframework.data.repository.core.support.DefaultCrudMethods.deleteDetected(DefaultCrudMethods.java:129)	at org.springframework.data.repository.core.support.DefaultCrudMethods.(DefaultCrudMethods.java:79)	at org.springframework.data.repository.core.support.DefaultRepositoryInformation.(DefaultRepositoryInformation.java:76)	at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepositoryInformation(RepositoryFactorySupport.java:183)	at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getRepositoryInformation(RepositoryFactoryBeanSupport.java:132)	at org.springframework.data.repository.support.Repositories.lookupRepositoryFactoryInformationFor(Repositories.java:218)	at org.springframework.data.repository.support.Repositories.hasRepositoryFor(Repositories.java:86)	at org.springframework.data.repository.support.DomainClassConverter.matches(DomainClassConverter.java:82)	at org.springframework.core.convert.support.GenericConversionService$ConvertersForPair.getConverter(GenericConversionService.java:618)	at org.springframework.core.convert.support.GenericConversionService$Converters.getRegisteredConverter(GenericConversionService.java:524)	at org.springframework.core.convert.support.GenericConversionService$Converters.find(GenericConversionService.java:508)	at org.springframework.core.convert.support.GenericConversionService.getConverter(GenericConversionService.java:241)	at org.springframework.core.convert.support.GenericConversionService.canConvert(GenericConversionService.java:136)	at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:159)	at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:93)	at org.springframework.beans.TypeConverterSupport.doConvert(TypeConverterSupport.java:64)	at org.springframework.beans.TypeConverterSupport.convertIfNecessary(TypeConverterSupport.java:47)	at org.springframework.validation.DataBinder.convertIfNecessary(DataBinder.java:584)	at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:102)	at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:79)	at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:157)	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:124)	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:748)	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689)	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:947)	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:878)	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:946)	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:837)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:822)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)	at com.sysmon.CorsFilter.doFilterInternal(CorsFilter.java:28)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)	at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)	at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:680)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1686)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:724)