Return 404 if building request params failed.

[ziv17]

closes #2736

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 78.37838% with 8 lines in your changes missing coverage. Please review.

Project coverage is 52.63%. Comparing base (400af13) to head (7c5f622).
Report is 146 commits behind head on dev.

Files with missing lines	Patch %	Lines
anyway/request_params.py	77.14%	8 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #2746      +/-   ##
==========================================
- Coverage   53.22%   52.63%   -0.59%     
==========================================
  Files         119      122       +3     
  Lines        9924    10213     +289     
==========================================
+ Hits         5282     5376      +94     
- Misses       4642     4837     +195     

Flag	Coverage Δ
unittests	52.63% <78.37%> (-0.59%)	⬇️

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[atalyaalon]

@ziv17 great work, thanks for the quick fix