thanks.
you have a ton of these lines.
[2025.05.26-14.33.41:222][ 0]LogAssetRegistry: Error: Package E:/JustWar2/EngineV2/UnrealEngine/Engine/Content/EngineMaterials/Substrate/Glints2/dict_0007_0185.uasset is too new. Engine Version: 1004 Package Version: 1009
the logs says you’re using 5.0, but those assets are meant for a newer version apparently.
try to load it with 5.1 or 5.2 or a later one.