That worked fine thank you.
So I tried out the steal command with all four actors in a battle,.
Here is one image to show you it all worked fine for me.
Also I noticed you want to use Yanfly's Party Limit Gauge, my advice would be stick with Boost Points instead. I think you can replicate anything you want with that Plugin, with BP, and BP more naturally fits with an OTB system.
My only thoughts are that I started a completely new project, kept everything in it, then added your data and js files over from there. So I'm using RPG Maker MV Version 1.6.1 on Windows.
Try a completely new project in Windows RPG Maker MV Version 1.6.1, and then just copy the exact same data and js folders that you gave me into the new project. Don't take anything out, but you would overwrite stuff with what you gave me as I did the same.
See if that works for you, and if not please provide a screenshot showing the error message and also open the console (F8 button to do that) and screenshot what that is saying to.
Since it works for me, it should work fine for you. Not sure what to say there.