CTF templefall a1

From the pictures your map appears to be fullbright, which means it can't be run on the servers without messing up settings. To fix this you will need lighting entities.

light_environment, this entity will basically cast light as if it were from the sun/moon. This will help light your outside areas. You can look at decompiled valve maps to get an idea of the settings used, along with the other common lighting entities like shadow_control or env_fog_controller. The skylist also has relevant settings for light_environment to match your skybox.

light_spot is another important lighting entity that you can use to light indoor areas in realistic ways.

Other references: general lighting entities, Crash's tutorials probably have something about lighting, tophattwaffle has general hammer tutorials about lighting as well.