no data is shown and an empty local appears

[nazlicankurt]

I used the documentation I also see in my cmd;
Using event hub consumer group [myrGroup]
Listening on 3000.
Successfully created the EventHubConsumerClient from IoT Hub event hub-compatible connection string.
The partition ids are: [ '0', '1', '2', '3' ]

But when I open localhost:3000 it is not showing any data

npm v 7.21
node v 14.15