[Journal of Legal Analysis] AWS WAF 'challenge' (HTTP 403) for https://papers.ssrn.com/sol3/Delivery.cfm/SSRN_ID2505032_code213269.pdf?abstractid=2307959&mirid=1; retrying with fallback UA
[Journal of Legal Analysis] HTTP 403 for https://papers.ssrn.com/sol3/Delivery.cfm/SSRN_ID2505032_code213269.pdf?abstractid=2307959&mirid=1 (fallback UA); retrying after 2.9s
[Journal of Legal Analysis] HTTP 403 for https://papers.ssrn.com/sol3/Delivery.cfm/SSRN_ID2505032_code213269.pdf?abstractid=2307959&mirid=1 (fallback UA); retrying after 4.7s
[Journal of Legal Analysis] Retrying download with curl fallback
[Journal of Legal Analysis] curl fallback returned 22 for https://papers.ssrn.com/sol3/Delivery.cfm/SSRN_ID2505032_code213269.pdf?abstractid=2307959&mirid=1: curl: (22) The requested URL returned error: 403
[Journal of Legal Analysis] Retrying download with HTTP session fallback
[Journal of Legal Analysis] HTTP session fallback failed for https://papers.ssrn.com/sol3/Delivery.cfm/SSRN_ID2505032_code213269.pdf?abstractid=2307959&mirid=1: DownloadError: Download failed for https://papers.ssrn.com/sol3/Delivery.cfm/SSRN_ID2505032_code213269.pdf?abstractid=2307959&mirid=1 (HTTP 403)
[Journal of Legal Analysis] HTTP 403 for https://papers.ssrn.com/sol3/Delivery.cfm/SSRN_ID2505032_code213269.pdf?abstractid=2307959&mirid=1 (fallback UA)