I've just finished to upgrade one of my factories to 800m2 and i'm hiring the new employees.
While hiring even just 1 employee, i am receiving this message: "You don't have enough money or storing positions." and the employee is not hired.
Considering that money is not currently an issue, can someone tell explain me the reason? I currently have 51 buildings and 37 free storing position in the warehouse (if that matters

Thanks!