“Shadow / Light” mode of Falloff map is not supported by Corona
This message is caused by using Falloff map in “Shadow/Light” mode, which is not supported by Corona Renderer. This feature, being non-realistic, would cause problems in photorealistic renderers such as Corona. Only the color/map used in “shaded” slot of the falloff map will be used.
Falloff map in "Shadow / Light" mode:
Falloff map in “Shadow/Light” mode present in the scene.
Remove offending falloff map, or set falloff mode to some of the supported modes.