Description

Closes: #4340

The problem is that the urls in utils.py are absolute so urllib will not construct the path we expect

Fix is to make the urls relative and to make sure the src ends with /

Added a unit test for this case and all unit tests are passing locally

Checklist:

• I have performed a self-review of my own code
• I have added a short summary of my change to the CHANGELOG.md
• My code follows the style guidelines of this project
• I have commented my code in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

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