Fix error message formatting

[JuliaSprenger]

No description provided.

[codecov]

Codecov Report

Merging #1013 (1b563de) into master (0016e60) will decrease coverage by 22.95%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           master    #1013       +/-   ##
===========================================
- Coverage   87.67%   64.71%   -22.96%     
===========================================
  Files          65       65               
  Lines        8187     8098       -89     
===========================================
- Hits         7178     5241     -1937     
- Misses       1009     2857     +1848     

Flag	Coverage Δ
unittests	64.71% <0.00%> (-22.96%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
dandi/download.py	67.59% <0.00%> (-19.66%)	⬇️
dandi/tests/test_upload.py	20.95% <0.00%> (-79.05%)	⬇️
dandi/tests/test_delete.py	22.69% <0.00%> (-77.31%)	⬇️
dandi/upload.py	9.64% <0.00%> (-76.22%)	⬇️
dandi/tests/test_helpers.py	25.00% <0.00%> (-75.00%)	⬇️
dandi/tests/test_dandiapi.py	26.59% <0.00%> (-73.41%)	⬇️
dandi/delete.py	30.51% <0.00%> (-60.45%)	⬇️
dandi/tests/test_dandiarchive.py	40.67% <0.00%> (-59.33%)	⬇️
dandi/tests/test_download.py	45.00% <0.00%> (-55.00%)	⬇️
dandi/conftest.py	52.94% <0.00%> (-47.06%)	⬇️
... and 29 more

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 87.65%. Comparing base (0016e60) to head (1b563de).
Report is 1115 commits behind head on master.

Files	Patch %	Lines
dandi/download.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1013      +/-   ##
==========================================
- Coverage   87.67%   87.65%   -0.03%     
==========================================
  Files          65       65              
  Lines        8187     8187              
==========================================
- Hits         7178     7176       -2     
- Misses       1009     1011       +2     

Flag	Coverage Δ
unittests	87.65% <0.00%> (-0.03%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

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[github-actions]

🚀 PR was released in 0.40.0 🚀