Hello, dear community.

This question is related to ROS melodic. Does anyone know how to fix these errors? I have installed ros melodic and every time I run gazebo I get this error

pxh> [Err] [ModelDatabase.cc:235] No <database> tag in the model database database.config found here[http://gazebosim.org/models/] 
[Err] [ModelDatabase.cc:294] Unable to download model manifests

Thank you so much