[2019] cant build stone thinks

Are the settlers not building anything stone? Or is it just the button that shows the red x?

Can you send me your save file so I can take a look? If so, here are the instructions:
https://steamcommunity.com/app/688060/discussions/0/1741106440033049878/

Looking at your game, you just need to disable skills for your Stone Mason. Right now, they are too busy building other things. Namely, they are busy working at the forge and building the wood roof you've got. If you designate one or more settlers to just do stonework, they'll focus on building your stone-based blueprints. :)

The number and cross on the blueprint indicate how many of that blueprint you can build + what have already been placed. In your case, you have several dozen placed. Let's say, 40. If you can only build 35 because that's as much as your current materials can provide for, you'll have a negative amount (35 - 40 placed = -5). The red cross is there to tell you that you're going to need more materials to build more + finish all the blueprints you have already placed.