Mirrors don't reflect light sources beams

Development Architectural and Design Visualization
1

Image: https://preview.redd.it/yvqvxh6runv81.jpg?width=960&crop=smart&auto=webp&s=93e854e77ae856808bfacb6eb23d72a6894cfe01

I’m expecting light to bounce off of the mirror and fill the floor roughly in the red area, but it’s not happening. Can someone point me at what box I need to check to make this happen?