When I enable Ultimate Nginx Blocker for any website, I have this response when I test if it's works.
curl -I https://mywebsite/ -A "AlphaBot"
curl: (92) HTTP/2 stream 1 was not closed cleanly: PROTOCOL_ERROR (err 1)
this is the normal behavior according to Ultimate Nginx Blocker tutorial : https://github.com/mitchellkrogza/nginx-ultimate-bad-bot-blocker/tree/V4.2019.09.1824#if-this-this-project-helped-you-out-help-support-it
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