I found one link but i don't know what is that

In my website I check security scan and I found one link but I don't know where is that link

I search my whole website pages but don't find anything

/index.php
/                          <-- this link
/artists.php
/byartwork.php
/bytattoo.php
/byartist.php
/contactus.php
/appointment.php
/cdn-cgi/l/email-protection

I want to remove this link. Please tell me where I can find this and what it is.