Problem
When downloading an artifact from CircleCI using Safari version 14, you may receive a file called "fetch-nonce.txt" containing the error message "You must be logged in" instead of the actual artifact file.
This occurs due to a compatibility issue between Safari v14.XX and CircleCI's artifact download mechanism.
Solutions
Solution 1: Use a Different Browser
Download the artifact using Chrome, Firefox, or Edge, not Safari.
Solution 2: Save Page Source in Safari
Click the artifact link (it will open in a new tab)
Right-click anywhere on the page
Select "Save page source"
Save the file with the correct filename and extension
Outcome
After using either solution, you will successfully download the artifact file and can proceed with your workflow.
Additional Resources
Storing Build Artifacts - Learn about artifacts in CircleCI
Downloading Artifacts - How to access and download build artifacts