I play Minecraft on a PlayStation 4 and have been doing a lot of trading with my villagers. My newest villager has become a stone mason, he even has the coat and an iron badge, but he will no longer let me trade with him. I cannot open the trading interface and when I hold out an item he used to trade for, he does not display an emerald. All of my other villagers are completely fine, but this one stone mason in particular is having problems.