Creating a Pull Request using the Atlassian VS Code extension fails

Issue Summary

On the most recent update of the Atlassian plugin for VS Code (Version 3.0.3), the pull request creation is broken. Any attempt to create a pull request will show this error -

Error creating pull request
Cannot read properties of undefined (reading 'site')

Steps to Reproduce

1. Install v3.0.3 of Atlassian VS Code
2. Create a new branch and make some changes
3. Try to create a pull request between the two local branches

Expected Results

Pull Request gets created and a summary is shown

Actual Results

No Pull Request is created. An error is shown -

Error creating pull request
Cannot read properties of undefined (reading 'site')

Workaround

• There are two workarounds. One is to create the pull request from the web instead.
• The second workaround is to use the remote branch instead of the local branch. i.e. origin/master and not just master.