# Why cafe.world example doesn't show objects if include point light?

I am learning how to use world files and try to use the example cafe.world. The problem is that when I load it in Gazebo it doesn't show any model. After many tries I have discovered that the problem is caused by the point light included in the code of cafe.world. The code is the following:

    <light name="point_light" type="point">
<pose>0 -0.377195 6.59868 0 -0 0</pose>
<diffuse>0.784314 0.784314 0.784314 1</diffuse>
<specular>0.0980392 0.0980392 0.0980392 1</specular>
<attenuation>
<range>50</range>
<constant>0.8</constant>
<linear>0</linear>