shop_cmd error

I'm having this error show up in the console every time an item is purchased - if I have the notification settings disabled then the error does not show up however I do want players to be notified when they have purchased an item. Currently with this error, no sound is made when an item is purchased and there is no feedback message in chat. 

As well as that, I'm also getting this yellow warning-like message in f1 console every time I open up the shop menu, nothing is missing however.

The only thing I have edited in the actual plugin file is the currency $ to a symbol to match the current economics system on my server.

Send me your config please.

Sure thing, here is the config!

I have notifications currently disabled as the error above appears and no notifications come through

Shop.json

Put "Show items gradually" back to true and you should not get the error. 

Changed Status from Pending to Work in Progress

Changed Fixed In to Next Version

Ah well perfect! I wouldn't have thought it'd be such a simple solution haha.

I was wondering however if it's okay to ask in this same post, is there any way to block players from setting a number higher than what the stack size is set to for an item they are attempting to purchase? For example, stack sizes for syringes are set to 2 on my server, but players can purchase syringes in stacks of 1000.

Good point, I'll have to look into some solution for that, currently nothing you can do about it