NWUI: Getting error with "Error in fetching count of activities based on status from Monitoring service"

The NetWorker Web User Interface (NWUI) shows:

Failed to fetch latest counts for Dashboard and Error in fetching count of activities based on status from Monitoring service.

From nwui.log:
Linux: /nsr/authc/logs/nwui.log
Windows: C:\Program Files\EMC NetWorker\nsr\authc-server\tomcat\logs\nwui.log

17:00:15.942 [https-jsse-nio-9090-exec-7] ERROR c.e.n.c.n.i.MonitoringApi - Error in fetching count of activities based on status from Monitoring Service. java.net.ConnectException: Connection refused (Connection refused)

From monitoring-app.log:
Linux: /nsr/nwui/monitoring/app/logs/monitoring-app.log
Windows: C:\Program Files\EMC NetWorker\nwui\monitoring\app\logs\monitoring-app.log

Workflow table - deleting records older than 2023-01-26 07:13:25 2023-03-27 19:13:25.055 [CustomWorkflowRepositoryImpl] [networkerRabbitReconnectThread1] INFO Monitoring - Workflow table - No of records deleted: 0 2023-03-27 19:13:25.058 [CustomActionRepositoryImpl] [networkerRabbitReconnectThread1] INFO Monitoring - Action table - deleting records older than 2023-01-26 07:13:25 2023-03-27 19:13:25.061 [CustomActionRepositoryImpl] [networkerRabbitReconnectThread1] INFO Monitoring - Action table - No of records deleted: 0

Port 9095 is not listening on the NWUI server.

1. NWUI services are in running state.
   Windows: tasklist | findstr nwui
   Linux: ps -ef | grep nwui

2. NWUI ports are either not open or not listening:

   Linux:

   # netstat -ano | grep 9095
   # netstat -ano | grep 5435

   Windows:

   > netstat -ano | findstr 9095
   > netstat -ano | findstr 5435