You have old base mod files 'entity.pak', 'game.pak', 'texture.pak', located in the 'mods\valour\resource' folder and should get an updated mod version.

You may:

a)delete mod;
b)unsubscribe;
c)subscribe again

or

a)turn off game;
b)run script to receive latest Valour version from workshop content;
Script is located in the folllowing path:
"_:\Program Files (x86)\Steam\steamapps\common\Men of War Assault Squad 2\mods\valour\mod_update.vbs".
c) wait for the message about mod has been updated;