looks like you got lens flares as a post filter
Glows, halos, or lens flares
Any light visible to the camera lens has the potential to produce an optical effect (light glow).
The Optical FX utility node lets you create glows, halos, or lens flares that are produced when a light shines directly into the camera. You can add an optical FX to any light.
For a detailed description of the attributes of the Optical FX utility node, see Glow utilities attributes.
You can also control how the glow from one surface affects the intensity of another's surface glow (see Create environments that glow) or create illuminated fog for a particular light (see Create illuminated fog).