My Alchemy shop is no longer working.

If anyone has found a fix, please let me know. I tried to have two different sims try to purchase items at the alchemy store, but after talking with the cashier, they jump back immediately to their home. I have twallan's mods already installed. i also deleted the original lot and replaced it, same thing happened. These same sims were able to use the shop previously so not sure what changed.