Same result as everyone else. I suspect this is the key error:
ERROR: poll: res://Worlds/World.tscn:8 - Parse Error: [ext_resource] referenced nonexistent resource at: res://scripts/RoadGrid.gd
At: scene/resources/resource_format_text.cpp:440.
Seems there's a resource missing in the export? It could be that RoadGrid.gd file that's missing...