no robot, floating furniture if at all
Hello, yesterday I was somehow able to get gazebo up and running by first launching an empty world and then experimentation_days.
As it turns out, you can better not have an extra launch of empty_world launch included in the launch file you launch secondly, that will conflict and cause this crash, you could rename the node but you actually only want a single empty world anyway
Transparency in gazebo can be resolved by viewing physic, bounding boxes or changing the viewing angle with the mouse until it is more or less close and parallel to the ground plane.