fix: frozen exceptions

[dapper91]

• fix: exceptions not frozen dataclasses anymore.

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.24%. Comparing base (a124fc1) to head (7b3290a).
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Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #134   +/-   ##
=======================================
  Coverage   78.24%   78.24%           
=======================================
  Files          44       44           
  Lines        2827     2827           
=======================================
  Hits         2212     2212           
  Misses        615      615           

Flag	Coverage Δ
unittests	78.24% <100.00%> (ø)

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