Sorry to comment again, but I found a compatibility issue with the plugin.
It's looking into its compatibility with the Visustella core engine.
https://imgur.com/a/mvZfYlv
In the link above there is an error, a TypeError that happens when you have the "Name Processing" event running
There is another TypeError: this._shopGoods is not iterable. This happens when you try to spawn in items via the visustella playtest effects
In the 2nd link, you have the error in the console, if you want any additional info you can reply.
Also, I test this on both an existing game and a fresh project and the results are the same.