When email listener unread the email but not processing it, and the request count not showing in admin portal.

Below mentioned exception throwing the logs.

2020-11-20 05:24:35,628 [     EMAIL-Thread-77] [  STANDARD] [                    ] [                    ] (mail.EmailListenerDelegateImpl) ERROR EMAIL.ListenerName.Listener XXXXXXXX - Error retrieving message by MsgId: <[email protected]>, exception: Message not found for messageIds [<[email protected]>]  com.pega.platform.integrationcore.client.email.EmailClientException: Message not found for messageIds [<[email protected]>]      at com.pega.platform.integrationcore.client.email.internal.javamail.JavaEmailClient.lambda$getMessagebyMessageId$0(JavaEmailClient.java:634) ~[integration-core.jar:?]      at java.util.Optional.orElseThrow(Optional.java:408) ~[?:?]      at com.pega.platform.integrationcore.client.email.internal.javamail.JavaEmailClient.getMessagebyMessageId(JavaEmailClient.java:634) ~[integration-core.jar:?]      at com.pega.platform.integrationcore.client.email.internal.javamail.JavaEmailClient.getMessagebyMessageId(JavaEmailClient.java:73) ~[integration-core.jar:?]      at com.pega.platform.integrationengine.client.email.internal.JavaEmailClientProxy.getMessagebyMessageId(JavaEmailClientProxy.java:399) ~[integration-engine.jar:?]      at com.pega.platform.integrationengine.internal.email.EmailListenerDelegateImpl.getNextUnprocessedMessage(EmailListenerDelegateImpl.java:196) ~[integration-engine.jar:?]      at com.pega.platform.integrationengine.internal.email.EmailListenerDelegateImpl$$EnhancerByGuice$$fa909e4b.CGLIB$getNextUnprocessedMessage$5(<generated>) ~[guice-4.0.jar:?]      at com.pega.platform.integrationengine.internal.email.EmailListenerDelegateImpl$$EnhancerByGuice$$fa909e4b$$FastClassByGuice$$4e46f95b.invoke(<generated>) ~[guice-4.0.jar:?]      at com.google.inject.internal.cglib.proxy.$MethodProxy.invokeSuper(MethodProxy.java:228) ~[guice-4.0.jar:?]      at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:75) ~[guice-4.0.jar:?]      at com.pega.platform.integrationcore.interceptors.LoggingInterceptor.invoke(LoggingInterceptor.java:62) ~[integration-core.jar:?]      at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:75) ~[guice-4.0.jar:?]      at com.google.inject.internal.InterceptorStackCallback.intercept(InterceptorStackCallback.java:55) ~[guice-4.0.jar:?]      at com.pega.platform.integrationengine.internal.email.EmailListenerDelegateImpl$$EnhancerByGuice$$fa909e4b.getNextUnprocessedMessage(<generated>) ~[guice-4.0.jar:?]      at com.pega.pegarules.integration.engine.internal.services.email.ParallelEmailPollerStrategy.runInParallel(ParallelEmailPollerStrategy.java:134) ~[printegrint.jar:?]      at com.pega.pegarules.integration.engine.internal.services.email.ParallelEmailPollerStrategy.run(ParallelEmailPollerStrategy.java:67) ~[printegrint.jar:?]      at com.pega.pegarules.integration.engine.internal.services.email.EmailListener.run_(EmailListener.java:547) ~[printegrint.jar:?]      at com.pega.pegarules.integration.engine.internal.services.listener.ServiceListenerBaseImpl.run(ServiceListenerBaseImpl.java:456) ~[printegrint.jar:?]