When GitHub Actions returns 'no such file or directory,' it typically indicates missing files or incorrect paths in the workflow. Review your workflow’s YAML file and verify that all referenced files exist in the specified locations. For example, if your workflow refers to a script at 'scripts/deploy.sh,' confirm that 'scripts' exists in the repository's root and contains 'deploy.sh.' If using Docker, ensure that the `COPY` commands specify accurate paths. Sometimes, errors are due to case sensitivity in filenames on Unix systems, where 'file.txt' differs from 'File.txt.' Addressing these common causes can resolve the issue, ensuring the workflow completes successfully.