Hello, I play in version 1.16.5 and I have this problem that bakers do not work or ask for anything, I created several worlds to see if the problem was from my neighborhood and nothing, the bakers did not work even if I gave him what he needed as fuel, etc.

Please fill in the template when reporting bugs. But please ask for support on Discord before reporting bugs that aren't bugs.

Because this is not a bug -- the baker works to request, so you either need to request bread in a postbox or in a minimum stock somewhere before they will produce anything, like most crafters.