Why is lighting not working properly after migrating?

I made a room with lots of lighting and i migrated it to another project. But now the light is aweful. How can i fix this or why did this happen? I really appreciate help =)

Hey there @Wacklion2.0! Welcome to the community! Are the lights just not rendering at all? What type of lights are they? Are newly created lights working appropriately? Are the new lights (or old lights) on different light layers?