Hardwood cutter reports no trees

Hello,

I have claimed new sector this morning, so I have built a storehouse, three Hardwood foresters and three Hardwood cutters there and upgraded all of them to lvl 2. The cutters are right next to each other, and the one in the middle refuses to see all the trees, has a red exclamation mark there and does not work. Stopping and restarting the production does not fix him, reloading the page neither, and I do not want to demolish it, because that way I'd lose the 100g I invested in his upgrade. I have uploaded a screenshot to see it.

Is there anything I can do?