Quality Assurance Projects - Sudoku Solver

Tell us what’s happening:
hi comrades,
can someone please help here, I have been struggling with this. All codes are fulfilled besides passing functional tests. However, Problem is, I couldn’t pass the challenge. Help is much appreciated.

Your project link(s)

solution: boilerplate-project-sudoku-solver-3 - Nix (beta) Repl - Replit

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Challenge: Quality Assurance Projects - Sudoku Solver

Link to the challenge: