Net Error:Cannot connect to destination host
First, make sure your game is running with Remote Inspector enabled.
Next, you need to check if you can connect to your mobile device from your PC. Type
Address]:[Port] in the address bar of your web browser on the PC. Replace the
[IP Address] and
[Port] with the values you typed in the Remote Hierarchy window. If everything is OK, you can see the message
Welcome to Remote Inspector!.
If you are trying to connect your device through WIFI, make sure that your PC and your device are in the same network.
Or, you are trying to connect your Android device through USB/ADB, make sure of your ADB forwarding settings. type below in the command line.
adb forward --list
It will show you the current forward settings like below.
1515fa33f65c3282 tcp:8080 tcp:8080