IP = 18.155.202.14
Content type of robots.txt is application/xml!
Look up this url in the url tool
https://bookdown.org/.well-known/acme-challenge: 403 application/xml
https://bookdown.org/.well-known/csvm: 403 application/xml
https://bookdown.org/.well-known/nostr.json: 403 application/xml
https://bookdown.org/.well-known/security.txt: 403 application/xml
https://bookdown.org/.well-known/traffic-advice: 403 application/xml