Bugfix: close session by cache not found

[yuki-uchida]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 7.57576% with 61 lines in your changes missing coverage. Please review.
✅ Project coverage is 40.11%. Comparing base (201f6fa) to head (a38ff56).
⚠️ Report is 4 commits behind head on master.

❌ Your patch status has failed because the patch coverage (0.00%) is below the target coverage (60.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #233      +/-   ##
==========================================
- Coverage   40.32%   40.11%   -0.21%     
==========================================
  Files          92       92              
  Lines        6374     6409      +35     
==========================================
+ Hits         2570     2571       +1     
- Misses       3804     3838      +34     

Components	Coverage Δ
moqt-core	87.45% <83.33%> (+0.01%)	⬆️
moqt-server	44.38% <0.00%> (-0.42%)	⬇️

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