How do I stop shadows from lens flare png?

I’m a semi noob with javascript and a complete noob with three js.
I have a scene where I am using a handful of spotlights with castShadows on. Another light is on the floor under one of the spotlights.
When I apply a lens flare to the light on the floor, the png for the floor lights lens flare (set up with LensFlareElement) casts a shadow.
How do I mitigate this? For meshes I can just turn off shadows but I don’t even know where to access the shadow property of the png from a lens flare… help?

Without flare:

With flare

Thanks in advance