Error Failed to Load Plugin at start on Android

I have an application that runs fine when :Launch"ed on Windows. But when I run it via the Launch button on my phone I get an error about a missing plugin.

After I click OK etc my application seems to run fine.
here are the errors:

Failed to load Plugin

Failed to read file. Null Stream Line :1 CH:0 (../../../Engine/Plugins/2D/Paper2D/Paper2D.uplugin)