This version of Unity is unsupported.
Method group is Obsolete

LightmapEditorSettings.maxAtlasSize

Obsolete LightmapEditorSettings.maxAtlasSize is obsolete, use Lightmapping.lightingSettings.lightmapMaxSize instead. . public static int maxAtlasSize;

Description

This property is now obsolete. Use LightingSettings.lightmapMaxSize.