Cpu mismatch architecture

HI, I already have working build that support kitkat & above in playstore.
But need to upload another to support jellybean users. So i duplicate the project, install cordova-android 6.4 and crosswalk.

Finally managed to build successfully. Added in config.xml

preference name=“xwalkMultipleApk” value=“false” />

Installed unique apk to emulator with jellybean api and app ‘stopped working’. Not sure how to debug this?
So, i tried to install to my device with nougat api and get the ‘mismatch cpu architecture’ instead.

Help would be appreciated on how to debug these issues.