Warning on DB operation failure for tasks

[dcore94]

I can see the following WARN messages, with correpsonding stacktraces, accumulate while using Conductor with Postgres (14) persistence and ES (7.6.1) as index.
I try to find workflow by taskid (from the GUI) but it doesn't find anything.
It doesn't seem to impact the functioning but since this warnings continue to increase it feels like it might become a problem.
Do you have any sggestions?

136784 [http-nio-8080-exec-1] WARN  com.netflix.conductor.service.ExecutionService [] - DB operation failed for task: d13b1e10-fba7-4b09-8f3c-3eec42057097, postponing task in queue
java.lang.NullPointerException: null
	at com.netflix.conductor.core.dal.ExecutionDAOFacade.populateTaskData(ExecutionDAOFacade.java:676) ~[conductor-core-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at com.netflix.conductor.core.dal.ExecutionDAOFacade.getTaskModel(ExecutionDAOFacade.java:452) ~[conductor-core-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at com.netflix.conductor.service.ExecutionService.poll(ExecutionService.java:136) [conductor-core-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at com.netflix.conductor.service.ExecutionService.getLastPollTask(ExecutionService.java:204) [conductor-core-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at com.netflix.conductor.service.TaskServiceImpl.poll(TaskServiceImpl.java:65) [conductor-core-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at com.netflix.conductor.service.TaskServiceImpl$$FastClassBySpringCGLIB$$d78c3007.invoke(<generated>) [conductor-core-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) [conductor-es7-persistence-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:779) [conductor-es7-persistence-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) [conductor-es7-persistence-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750) [conductor-es7-persistence-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at org.springframework.validation.beanvalidation.MethodValidationInterceptor.invoke(MethodValidationInterceptor.java:119) [conductor-es7-persistence-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) [conductor-es7-persistence-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750) [conductor-es7-persistence-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:692) [conductor-es7-persistence-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at com.netflix.conductor.service.TaskServiceImpl$$EnhancerBySpringCGLIB$$aca16f50.poll(<generated>) [conductor-core-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at com.netflix.conductor.rest.controllers.TaskResource.poll(TaskResource.java:60) [conductor-rest-3.8.0-SNAPSHOT.jar!/:3.8.0-SNAPSHOT]
	at jdk.internal.reflect.GeneratedMethodAccessor106.invoke(Unknown Source) ~[?:?]
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?]
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) [spring-web-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) [spring-web-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) [spring-webmvc-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878) [spring-webmvc-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792) [spring-webmvc-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) [spring-webmvc-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) [spring-webmvc-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) [spring-webmvc-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) [spring-webmvc-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) [spring-webmvc-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:626) [tomcat-embed-core-9.0.46.jar!/:2.5]
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) [spring-webmvc-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) [tomcat-embed-core-9.0.46.jar!/:2.5]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-embed-websocket-9.0.46.jar!/:?]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:97) [spring-boot-actuator-2.3.12.RELEASE.jar!/:2.3.12.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.15.RELEASE.jar!/:5.2.15.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707) [tomcat-embed-core-9.0.46.jar!/:?]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.46.jar!/:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:?]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.46.jar!/:?]
	at java.lang.Thread.run(Unknown Source) [?:?]