Button Mapper App

Can anyone help me?
I try installing button mapper on my LG Classic and it gives me a message saying that app not installed

Atusb Which button mapper (from where)?

Put APK in the phone's Download folder and run in WebADB

pm install -g /sdcard/download/filename.apk

Replace with real filename. Tell me the output.

Biden2020prez Error: Can't open non-file: /sdcard/download/buttonmappera4f.apk

Atusb is it in the download folder? what happens when you press it from file manager?

Atusb Its in the download folder of your internal storage?

Atusb Not sure what the issue is. Send me an email [Login to see the link]