Diaper Items not Loading

[puppysweets-lab]

Hello, I am completely illiterate when it comes to code, so I would appreciate some help. When I launch my game using SMAPI with the latest update to this mod, Jodi's letter has no items in it. There are also no diapers or underwear in the shops like there usually are. Opening the SMAPI window provides the same error message on repeat:
[Regression] This mod failed in the Display.MenuChanged event. Technical details:
MissingFieldException: Field not found: 'StardewValley.Menus.ShopMenu.itemPriceAndStock'.
at PrimevalTitmouse.Regression.ReceiveMenuChanged(Object sender, MenuChangedEventArgs e)
at StardewModdingAPI.Framework.Events.ManagedEvent`1.Raise(TEventArgs args) in SMAPI\Framework\Events\ManagedEvent.cs:line 101
What does this mean? Is there any way I can fix this?

[TungstenFD]

I figured it out eventually, and a fixed version has been forked from this (as in someone made an ever so slightly different variant based on the code here) which can be found in a ready-to-use form here https://github.com/tom947041/Stardew_Valley_Regression_Mod/blob/main

I am not code-literate enough to tell you how to fix it without downloading a new mod though. What I can say is that when it is working, the care package should include both some spring onions and some pawprint diapers, and if you haven't toggled easy mode also some lavender pullups.

Hope this helps ^_^