Confirming.
That is, if Material Editor is used - You need to enable Refraction (must not be 0,00).
Or as soon as you add/enable Material Node Tree, it renders without an error.
PS
Using
Material Editor it is necessary to check & set the preferred Material under
Corona Surface Shading > Corona Material: -
CoronaPortalMtl (Ligh Portal)
-
CoronaVolumeMtl (Volumetric Material)
-
CoronaLightMtl (Emissive / Light Material)
-
CoronaMtl (Corona Standard Material)
eg.