There are two solutions:
1. Respecting the 4.6 build
You have made an im mesh with more than 500 polygons, you need to make another or other reduced polygon meshes (Lods), then place the tag: mesh-table-lod-transition-distances with the distances at which the display of the meshes will change.
Also removing the light 1 tag
2. Simplest solution, change the build to 3.5 and remove the light 1 tag