BLS has restricted static files downloads
Since 2023-12-28 the BLS seems to have restricted static files downloads.
Reproducing the problem
curl 'https://download.bls.gov/pub/time.series/'
[...]
<p>The BLS is committed to providing data promptly and according to established schedules. Automated retrieval programs (commonly called "robots" or "bots") can cause delays and interfere with other customers' timely access to information. Therefore, bot activity that doesn't conform to BLS usage policy is prohibited.</p>
<p>We apologize for any inconvenience. If you believe we have made an error, please <a href=https://data.bls.gov/forms/opb.htm?akamai-0.9c87dd58.1707315447.9e61379>contact us</a>.</p>
[...]
DBnomics should not violate BLS terms of service and the API should be used (cf https://www.bls.gov/developers/).