the variable fields in this javascript file is one of the ways I package all the data so that it's harder to get at. When I copy the Actors.json data into the circled field it gives me the error "Actor undefined". When I first encountered this error I started to do the usual troubleshooting steps of disabling plugins and re-enabling them till I found the one that caused the issue, and the balloon position plugin in is the one causing the issue. (sorry if i'm still unclear, I have a hard time explaining things in general)
Viewing post in Hakuen Studio Balloon Position for RPG Maker MV MZ comments
Ok, I have to be honest. I don't have any clue on what's going on xD
BUT, maybe, just maybe, it can be related to the feature of my plugin that uses the filename to adjust the balloon positions. If you are using the method of the filename, please try to change it to the meta method or the comment method(for events)
If that not solve the problem, I'm sorry but don't know what the problem is. For sure is a compatibility issue related to the way you package your game.