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
I renctly encountered this problem, and this is very strange, on the other thread there's people suggest you should change you usb setting to "MTP/FTP" or something, this doesnt make sense and dont work out on my case.
After search some example case in this problem, I found that most of people have this problem when minSDK
/'targetSDK'/'compileSdkVersion' is not a int but a letter.
I changed my MNC/N' to 23, and
build - clean build`, problem solved.
hope it can help someone.