Fix CouldNotCopyNotFound exception description

[jotare]

Description

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.75%. Comparing base (9eb9146) to head (65782ad).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2826      +/-   ##
==========================================
- Coverage   86.78%   86.75%   -0.04%     
==========================================
  Files         380      380              
  Lines       23867    24012     +145     
==========================================
+ Hits        20714    20832     +118     
- Misses       3153     3180      +27     

Flag	Coverage Δ
nucliadb	75.27% <ø> (-0.05%)	⬇️
nucliadb-ingest	40.95% <ø> (ø)
nucliadb-reader	42.73% <ø> (-0.01%)	⬇️
nucliadb-search	44.20% <ø> (-0.01%)	⬇️
nucliadb-standalone	47.37% <ø> (-0.01%)	⬇️
nucliadb-train	45.52% <ø> (-0.03%)	⬇️
nucliadb-writer	46.81% <ø> (-0.02%)	⬇️
nucliadb_dataset	55.45% <ø> (ø)
nucliadb_models	85.78% <ø> (+0.04%)	⬆️
nucliadb_sdk	83.13% <ø> (+2.90%)	⬆️
nucliadb_telemetry	86.56% <ø> (ø)
nucliadb_utils	83.80% <ø> (ø)

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