[Journal of Air Law and Commerce] Initializing Playwright browser...
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[Journal of Air Law and Commerce] Discovering content...
[Journal of Air Law and Commerce] Discovering content from https://scholar.smu.edu/jalc/...
[Journal of Air Law and Commerce] Stopping after consecutive no-new-item issues
[Journal of Air Law and Commerce] Found 5 items
[Journal of Air Law and Commerce] [1/5] Downloading: journal_of_vol91_front_matter_91109ade.pdf
[Journal of Air Law and Commerce] Browser PDF request failed (TimeoutError); trying HTTP transport
[Journal of Air Law and Commerce] AWS WAF 'challenge' (HTTP 403) for https://scholar.smu.edu/context/jalc/article/4295/viewcontent/; retrying with fallback UA
[Journal of Air Law and Commerce] HTTP 403 for https://scholar.smu.edu/context/jalc/article/4295/viewcontent/ (fallback UA); retrying after 3.0s
[Journal of Air Law and Commerce] HTTP 403 for https://scholar.smu.edu/context/jalc/article/4295/viewcontent/ (fallback UA); retrying after 5.3s
[Journal of Air Law and Commerce] Retrying download with curl fallback
[Journal of Air Law and Commerce] curl fallback returned 22 for https://scholar.smu.edu/context/jalc/article/4295/viewcontent/: curl: (22) The requested URL returned error: 403
[Journal of Air Law and Commerce] Retrying download with HTTP session fallback
[Journal of Air Law and Commerce] HTTP session fallback failed for https://scholar.smu.edu/context/jalc/article/4295/viewcontent/: DownloadError: Download failed for https://scholar.smu.edu/context/jalc/article/4295/viewcontent/
[Journal of Air Law and Commerce] HTTP 403 for https://scholar.smu.edu/context/jalc/article/4295/viewcontent/ (fallback UA)
[Journal of Air Law and Commerce] [2/5] Downloading: journal_of_vol91_regulating_space_based_solar_power__challenges_und_8d9c91b5.pdf
[Journal of Air Law and Commerce] AWS WAF 'challenge' (HTTP 403) for https://scholar.smu.edu/context/jalc/article/4296/viewcontent/; retrying with fallback UA
[Journal of Air Law and Commerce] HTTP 403 for https://scholar.smu.edu/context/jalc/article/4296/viewcontent/ (fallback UA); retrying after 2.9s
[Journal of Air Law and Commerce] HTTP 403 for https://scholar.smu.edu/context/jalc/article/4296/viewcontent/ (fallback UA); retrying after 5.0s
[Journal of Air Law and Commerce] Retrying download with curl fallback
[Journal of Air Law and Commerce] curl fallback returned 22 for https://scholar.smu.edu/context/jalc/article/4296/viewcontent/: curl: (22) The requested URL returned error: 403
[Journal of Air Law and Commerce] Retrying download with HTTP session fallback
[Journal of Air Law and Commerce] HTTP session fallback failed for https://scholar.smu.edu/context/jalc/article/4296/viewcontent/: DownloadError: Download failed for https://scholar.smu.edu/context/jalc/article/4296/viewcontent/
[Journal of Air Law and Commerce] HTTP 403 for https://scholar.smu.edu/context/jalc/article/4296/viewcontent/ (fallback UA)
[Journal of Air Law and Commerce] [3/5] Downloading: journal_of_vol91_what_is_terrorism__dbf78bf4.pdf
[Journal of Air Law and Commerce] AWS WAF 'challenge' (HTTP 403) for https://scholar.smu.edu/context/jalc/article/4297/viewcontent/; retrying with fallback UA
[Journal of Air Law and Commerce] HTTP 403 for https://scholar.smu.edu/context/jalc/article/4297/viewcontent/ (fallback UA); retrying after 2.8s
[Journal of Air Law and Commerce] Timeout downloading https://scholar.smu.edu/context/jalc/article/4297/viewcontent/: Connection timeout to host https://scholar.smu.edu/context/jalc/article/4297/viewcontent/
[Journal of Air Law and Commerce] Retrying https://scholar.smu.edu/context/jalc/article/4297/viewcontent/ after ServerTimeoutError: Connection timeout to host https://scholar.smu.edu/context/jalc/article/4297/viewcontent/
[Journal of Air Law and Commerce] curl fallback returned 22 for https://scholar.smu.edu/context/jalc/article/4297/viewcontent/: curl: (22) The requested URL returned error: 403
[Journal of Air Law and Commerce] Retrying download with HTTP session fallback
[Journal of Air Law and Commerce] HTTP session fallback failed for https://scholar.smu.edu/context/jalc/article/4297/viewcontent/: DownloadError: Download failed for https://scholar.smu.edu/context/jalc/article/4297/viewcontent/
[Journal of Air Law and Commerce] [4/5] Downloading: journal_of_vol91_not_quite_fit_to_fly__a_reflection_on_due_process__e68891ff.pdf
[Journal of Air Law and Commerce] AWS WAF 'challenge' (HTTP 403) for https://scholar.smu.edu/context/jalc/article/4298/viewcontent/; retrying with fallback UA
[Journal of Air Law and Commerce] Timeout downloading https://scholar.smu.edu/context/jalc/article/4298/viewcontent/: Connection timeout to host https://scholar.smu.edu/context/jalc/article/4298/viewcontent/
[Journal of Air Law and Commerce] Retrying https://scholar.smu.edu/context/jalc/article/4298/viewcontent/ after ServerTimeoutError: Connection timeout to host https://scholar.smu.edu/context/jalc/article/4298/viewcontent/
[Journal of Air Law and Commerce] curl fallback returned 22 for https://scholar.smu.edu/context/jalc/article/4298/viewcontent/: curl: (22) The requested URL returned error: 403
[Journal of Air Law and Commerce] Retrying download with HTTP session fallback
[Journal of Air Law and Commerce] HTTP session fallback failed for https://scholar.smu.edu/context/jalc/article/4298/viewcontent/: DownloadError: Download failed for https://scholar.smu.edu/context/jalc/article/4298/viewcontent/
[Journal of Air Law and Commerce] [5/5] Downloading: journal_of_vol91_decluttering_the_orbital_commons__a_proposal_for_t_1585c12c.pdf
[Journal of Air Law and Commerce] AWS WAF 'challenge' (HTTP 403) for https://scholar.smu.edu/context/jalc/article/4299/viewcontent/; retrying with fallback UA
[Journal of Air Law and Commerce] HTTP 403 for https://scholar.smu.edu/context/jalc/article/4299/viewcontent/ (fallback UA); retrying after 2.9s
[Journal of Air Law and Commerce] HTTP 403 for https://scholar.smu.edu/context/jalc/article/4299/viewcontent/ (fallback UA); retrying after 5.4s
[Journal of Air Law and Commerce] Timeout downloading https://scholar.smu.edu/context/jalc/article/4299/viewcontent/: Connection timeout to host https://scholar.smu.edu/context/jalc/article/4299/viewcontent/
[Journal of Air Law and Commerce] Retrying https://scholar.smu.edu/context/jalc/article/4299/viewcontent/ after ServerTimeoutError: Connection timeout to host https://scholar.smu.edu/context/jalc/article/4299/viewcontent/
[Journal of Air Law and Commerce] curl fallback returned 22 for https://scholar.smu.edu/context/jalc/article/4299/viewcontent/: curl: (22) The requested URL returned error: 403
[Journal of Air Law and Commerce] Retrying download with HTTP session fallback
[Journal of Air Law and Commerce] HTTP session fallback failed for https://scholar.smu.edu/context/jalc/article/4299/viewcontent/: DownloadError: Download failed for https://scholar.smu.edu/context/jalc/article/4299/viewcontent/
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