so i reinstalled linux on my computer and after i reinstalled android studio i tried getting an app that i wrote on to my phone which previously had not been a problem. The App
This wortk for me in Android Studio: hold ctl+alt+shift press 'S', This will open project structure. Click on the tab 'Flavors', check in min sdk version if appear a version of your device sdk if you see select it and click 'OK', but if you didn't see a option for your sdk device click on cancel. Go to build.gradle(app) file and type in the min sdk version the version of your sdk device(android studio will recomend you to intall the version sdk). After that hold ctl+alt+shift press 'S' and the version sdk min will be there, just select it and click 'ok'. :)