World file did not launch for ignition fortress and ROS2 Galactic ?

[vbalaji21]

Describe the bug
Please say what is broken. Include whether you think this is a problem with the code or the documentation / tutorials.

Expected behavior
What you expected to happen.

To Reproduce
List the steps to reproduce the problem:

1. Run '...'
2. Next, run '....'
3. See error

System Configuration:
Tell us about your system.

• OS: [e.g. Ubuntu 20.04]
• ROS Version: [e.g. ROS 2, Galactic]
• Gazebo Version: [e.g. Ignition Fortress]
• Graphics Card: [e.g. Nvidia GTX 650]
• Are you using VRX or VRX Classic? (The default is VRX).

Screenshots
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Additional notes
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