NPE in rest API after app gets uninstalled - ONOS-8150

2021-10-21T19:35:14,369 | WARN | qtp1097683886-87 | ServerErrorMapper | 188 - org.onosproject.onlab-rest - 2.5.4 | Unhandled REST exception
java.lang.NullPointerException: null
at org.onosproject.rest.resources.ApplicationsWebResource.health(ApplicationsWebResource.java:103) ~[!/:?]
at jdk.internal.reflect.GeneratedMethodAccessor69.invoke(Unknown Source) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:76) ~[!/:?]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:148) ~[!/:?]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:191) ~[!/:?]
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:200) ~[!/:?]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:103) ~[!/:?]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:493) ~[!/:?]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:415) ~[!/:?]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:104) ~[!/:?]
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:277) [!/:?]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:272) [!/:?]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:268) [!/:?]
at org.glassfish.jersey.internal.Errors.process(Errors.java:316) [!/:?]
at org.glassfish.jersey.internal.Errors.process(Errors.java:298) [!/:?]
at org.glassfish.jersey.internal.Errors.process(Errors.java:268) [!/:?]
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:289) [!/:?]
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:256) [!/:?]
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:703) [!/:?]
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:416) [!/:?]
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:370) [!/:?]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389) [!/:?]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342) [!/:?]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229) [!/:?]
at org.eclipse.jetty.servlet.ServletHolder$NotAsyncServlet.service(ServletHolder.java:1402) [!/:9.4.28.v20200408]
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:763) [!/:9.4.28.v20200408]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1631) [!/:9.4.28.v20200408]
at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:226) [!/:9.4.28.v20200408]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618) [!/:9.4.28.v20200408]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:549) [!/:9.4.28.v20200408]
at org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:71) [!/:?]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) [!/:9.4.28.v20200408]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:567) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1610) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1363) [!/:9.4.28.v20200408]
at org.ops4j.pax.web.service.jetty.internal.HttpServiceContext.doHandle(HttpServiceContext.java:298) [!/:?]
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) [!/:9.4.28.v20200408]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:489) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1580) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1278) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [!/:9.4.28.v20200408]
at org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:82) [!/:?]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.Server.handle(Server.java:500) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:547) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375) [!/:9.4.28.v20200408]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273) [!/:9.4.28.v20200408]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) [!/:9.4.28.v20200408]
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) [!/:9.4.28.v20200408]
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117) [!/:9.4.28.v20200408]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336) [!/:9.4.28.v20200408]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313) [!/:9.4.28.v20200408]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171) [!/:9.4.28.v20200408]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129) [!/:9.4.28.v20200408]
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375) [!/:9.4.28.v20200408]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806) [!/:9.4.28.v20200408]
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938) [!/:9.4.28.v20200408]
at java.lang.Thread.run(Thread.java:834) [?:?]