problem description

I scanned my blog with kitchen knife software, and then I couldn"t access my blog, but I could access https normally.

1
ping www.dreamate.topping
2

3
80

debug by myself 4
I still can"t access
debug 5
other https projects of my server without index.html in the project root directory, so I think both nginx and php-fpm are normal.

what result do you expect? What is the error message actually seen?

1 I expect the boss to list a few steps to check where to go step by step when a website in my environment can"t be accessed.
2 hopes to find the problem.
Thank you