Some mistakes about Gazebo

[gyxx323]

Versions

• ROS Driver version:Universal_Robots_ROS_Driver
• ubuntu18.04+ros melodic
• fmauch_universal_robot（calibration_devel）

Problem

I downloaded files from https://github.com/fmauch/universal_robot/tree/calibration_devel, and want to use for the calculation of the gazebo.
But when I run the command
roslaunch ur_gazebo ur3.launch
It will report an error that the file ur3.launch does not exist

Then I found a file called ur3_bringup.launch in the ur_gazebo folder and I ran
roslaunch ur_gazebo ur3_bringup.launch
The Gazebo interface will start, but I'll get an error when I try to start the RVIZ interface in subsequent runs. Model image is not loaded in the RVIZ interface.

I think there is something wrong with my Gazebo. Can I use ur3_bringup.launch instead of ur3. Launch? If not, what should I do?
Thank you!

[fmauch]

This is not related to anything in this driver. Please reopen this issue at https://github.com/fmauch/universal_robot/issues