I can't view ns in 8000 port

here is my issue:

transport: http2Server.HandleStreams failed to receive the preface from client: read tcp 192.168.1.97:8000->112.16.18.175:65473: read: connection reset by peer""
Sep 28 14:49:05 dell chirpstack-network-server[10554]: time=“2020-09-28T14:49:05+08:00” level=warning msg=“grpc: Server.Serve failed to create ServerTransport: connection error: desc = “transport: http2Server.HandleStreams received bogus greeting from client: \“GET / HTTP/1.1\\r\\nHost: 11\”””

Have you checked these topics?

https://forum.chirpstack.io/search?q=received%20bogus%20greeting%20from%20client

I have a similar problem.
The error message is:
chirpstack-network-server[940]: time="2021-04-14T15:44:45+02:00" level=warning msg="grpc: Server.Serve failed to create ServerTransport: connection error: desc = \"transport: http2Server.HandleStreams received bogus greeting from client: \"GET / HTTP/1.1\\\\r\\\\nHost: 10\"\""

The search results on the link did not help me. How can I narrow down and fix the error?