When I import url, there will show the folling message:
"Cannot import data as Graph6 format"
The codes as following:
But the another url will work:
I don't know why it happend, I can visit the website directly. I guess the ".G6" is the problem, but I don't know how the solve it.
I change "XMLObject" to "HTML" (by Szabolcs), but the return datas is different with "XMLObject".