[fix] : ignore if env vars are empty

[rahulait]

General:

Use default values if env var is set but is empty.

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• Have you checked to ensure there aren't other open or closed Pull Requests for the same bug/feature/question?

Pull Request Guidelines:

1. Does your submission pass tests?
2. Have you added tests?
3. Are you addressing a single feature in this PR?
4. Are your commits atomic, addressing one change per commit?
5. Are you following the conventions of the language?
6. Have you saved your large formatting changes for a different PR, so we can focus on your work?
7. Have you explained your rationale for why this feature is needed?
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.62%. Comparing base (1b2351c) to head (53604a5).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #289   +/-   ##
=======================================
  Coverage   70.62%   70.62%           
=======================================
  Files          11       11           
  Lines        2172     2172           
=======================================
  Hits         1534     1534           
  Misses        488      488           
  Partials      150      150           

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