Unknown Android deployment JSON file location -

i tried follow example : http://doc.qt.io/qtcreator/creator-mobile-app-tutorial.html

but when try build it, have error :

23:51:49: internal error: unknown android deployment json file location. error while building/deploying project accelbubble (kit: android armeabi (gcc 4.9, qt 5.4.1)) when executing step "build android apk

there not lot of things on internet, came here help.

anyone know ?

you need select run configuration project: see comments on this qt bug report

select 'project' icon on left toolbar, choose 'run' on active target, , set "run configuration".