看起来 Facebook 只接受 localhost 作为域名，其中没有任何点.

Looks like Facebook accepts only localhost as a domain name without any dots in it.

使您的本地站点的名称中带有点，然后它应该可以正常工作 - localsite.name、mytestsite.local 甚至 foo.bar ...

Make your local site’s name something with a dot in it, then it should work fine – localsite.name, mytestsite.local or even foo.bar …