Bug Fix

[lincmba]

Handle null adminlevels in post filtering location hierarchy

IMPORTANT: Where possible all PRs must be linked to a Github issue

Resolves [link to issue]

Engineer Checklist

• [ ] I have written Unit tests for any new feature(s) and edge cases for bug fixes
• [ ] I have added documentation for any new feature(s) and configuration option(s) on the README.md
• [ ] I have run mvn spotless:check to check my code follows the project's style guide
• [ ] I have run mvn clean test jacoco:report to confirm the coverage report was generated at plugins/target/site/jacoco/index.html
• [ ] I ran mvn clean package right before creating this pull request.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 45.28%. Comparing base (712d495) to head (c78b77a). Report is 12 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #77 +/- ## ============================================ + Coverage 45.01% 45.28% +0.27% - Complexity 130 134 +4 ============================================ Files 16 16 Lines 1213 1252 +39 Branches 146 151 +5 ============================================ + Hits 546 567 +21 - Misses 600 618 +18 Partials 67 67 ```

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