Adventures In Import-land, Part II - Pybites

The 'KeyError: 'GOOGLE_APPLICATION_CREDENTIALS'' error often occurs due to missing environment variables. Make sure you have set the 'GOOGLE_APPLICATION_CREDENTIALS' variable, which points to your service account key file.

The issue in the provided code is that the 'UPLOAD_FOLDER' and 'DOWNLOAD_FOLDER' variables are not correctly scoped within the functions. Ensure proper scoping and use of global variables where necessary.

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