ERROR: Could not open requirements file: [Errno 2] No such file or directory: 'requirements.txt'

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**Env & To Reproduce[复现与环境]**
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Start by checking the repository's setup instructions and whether requirements.txt exists, then identify the command that produces this error. The issue does not provide an environment, code version, model, or reproduction command; done should mean the dependency-install path works without the missing-file error and the affected command and environment are documented.

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