Cannot connect to the device - Eclipse Ubuntu 22.04

Hi, I followed the instruction from here Step 4 - Create your first applications | ConnectCore 6UL
Installed the toolchain and installed all updates.
I created Hello World application but when I try to Create a new connection I get an Error: Connection refused (

Eclipse Ubuntu 22.04
WSL version:
Kernel version:
WSLg version: 1.0.59
MSRDC version: 1.2.4677
Direct3D version: 1.611.1-81528511
DXCore version:
Windows version: 10.0.22621.2715

Connection device with Eclipse Ubuntu 22.04 some time become difficult I still remember when i was doing my home work of Research Topics In Project Management my ubuntu OS stop working