cant build buildings

https://preview.redd.it/iya8ffayznch1.jpg?width=1920&format=pjpg&auto=webp&s=71d6c59e49875a60af4c6d08a7d9f648df591fc2

im playing the empire 2 mod which has worked for me before but now i cant build barracks or other buildings even though i have the required technologies