[2.3.1]Can't build new holding

[kimsu1]

I can't make new holding in my territory as king or duke or counts, even if I have a enough money.
No tooltip said why I can't build this one.

Is it WAD or bug?

 

[Groogy]

Having a quick look at it right now.
Alright confirmed it, will try and fix this ASAP.

Update: Fixed now