Farmer won't take my items even tho I have them

I was trading with my farmers like normal when suddenly they stopped trading any items that doesn't require emeralds. This has happened twice the first time I got rid of all the villagers but then it happened again and I noticed this only happens when I sleep in a bed that's close by. I know this happens with masons but its happening with my farmers every one and I got 30. And when I search about farmers having this problem nothing came up.