Cannot get gps in signalK to opencpn

[ReinierD]

    Rpi 4 noobs last download.
opencpn localhost:51000: socket connection refused. So i try port 51000 in stead of 3000 no result, set it back to network port 3000
When I use ttyusbo nmea 1830 in connections opencpn it works and shows nmea debug window, but nothing happens in connectons network-input signal K- localhost- 10110.
changed also network port 3000 en 51000.
connection pypilot and signal K lookes oke
What am i doing wrong or is it a format fault?