Added error handling for the case when the expected directory does no…

[RoryBarnes]

…t exist.

[github-actions]

Unit Test Results

10 tests  ±0   10 ✔️ ±0   1m 30s ⏱️ +11s
  1 suites ±0     0 💤 ±0 
  1 files   ±0     0 ❌ ±0 

Results for commit cc9ab2f. ± Comparison against base commit 5779cdc.

♻️ This comment has been updated with latest results.

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (5779cdc) 15.82% compared to head (cc9ab2f) 15.79%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #30      +/-   ##
==========================================
- Coverage   15.82%   15.79%   -0.03%     
==========================================
  Files           8        8              
  Lines        1074     1076       +2     
==========================================
  Hits          170      170              
- Misses        904      906       +2     

Files	Coverage Δ
bigplanet/bp_get.py	6.14% <0.00%> (-0.07%)	⬇️

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