This works for me. Does it fail for all projects or just the one? Can you build and run locally? Can you bundle an APK and install instead of targeting a running dmengine?
I tried it on a fresh project and got the same result. I can build and run locally on my computer and I can bundle and install fine. only trying to do this through the development app is giving me issues.
though I managed to get another line in my console while trying all this that is just
FATAL:ENGINE: Unable to load project file: 'http://192.168.1.94:55755/build/game.projectc' (-1) that shows after the line in my screenshot if that helps at all
This seems to indicate that the mobile dev app has problems loading the game content over the network. Could it be a firewall issue? Could you try connecting via USB instead of Wifi (Running the development app on device)?