Error starting Metabase

I have downloaded the metabase jar & am trying to run , i get the below exception & the browser displays blank page for http://localhost:3000

ERROR http.ApacheHttpClientAdapter :: ApacheHttpClient POST Request failed: Connection reset
ERROR emitter.BatchEmitter :: Batchemitter failed to send 1 events: cod
INFO task.send-pulses :: Sending scheduled pulses...

Kindly help to resolve the issue.

Kind regards