org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException

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    Root Cause Analysis

    1. org.springframework.web.util.NestedServletException

      Request processing failed; nested exception is java.lang.NullPointerException

      at cloudos.HealthCheckerController.findAll()
    2. cloudos
      HealthCheckerController.findAll
      1. cloudos.HealthCheckerController.findAll(HealthCheckerController.java:39)
      1 frame
    3. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:497)
      4 frames
    4. Spring
      InvocableHandlerMethod.invokeForRequest
      1. org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
      2. org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
      2 frames
    5. Spring MVC
      FrameworkServlet.doGet
      1. org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114)
      2. org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
      3. org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
      4. org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
      5. org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
      6. org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
      7. org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
      8. org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
      8 frames
    6. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
      1 frame
    7. Spring MVC
      FrameworkServlet.service
      1. org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
      1 frame
    8. Spring TestContext
      TestDispatcherServlet.service
      1. org.springframework.test.web.servlet.TestDispatcherServlet.service(TestDispatcherServlet.java:65)
      1 frame
    9. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
      1 frame
    10. Spring TestContext
      MockMvc.perform
      1. org.springframework.mock.web.MockFilterChain$ServletFilterProxy.doFilter(MockFilterChain.java:167)
      2. org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
      3. org.springframework.test.web.servlet.MockMvc.perform(MockMvc.java:155)
      3 frames
    11. cloudos
      HealthCheckerControllerTest.testHealthChecker
      1. cloudos.HealthCheckerControllerTest.testHealthChecker(HealthCheckerControllerTest.java:48)
      1 frame