Hi,
I had this issue last night as well. After searching the internet I couldn’t find a solution.
I noticed it coudnt find “game/thirdpersonbp” or something similar in a log. So I figured it might be trying to access components of the engine i had not installed.
Got it working in the end by installing the Android target platform in the engine settings. ( Epic launcher> Library> Engine “Launch” dropdown> Options> Android target platform.)
Next time I opened up my project, my device was listed in the Launch buttons dropdown in the engine.
Hope this helps,
Fatih