I get [warning] Cloudfare IUAM challenge.

[valesti-0801]

I get this error when downloading from nhentai
[nhentai][warning] Cloudflare IUAM challenge
[nhentai][error] HttpError: '503 Service Temporarily Unavailable' for 'https://nhentai.net/api/gallery/123456'

[mikf]

See #2537 and #2636.

You basically have to run gallery-dl with the same user agent and cookies as your browser.

[valesti-0801]

Thanks a lot. It worked.