Unable to create a Web for the URL "%1!.100s!" because its root directory, "%2!.255s!", falls below the root of another Web ...

Unable to create a Web for the URL "%1!.100s!" because its root directory, "%2!.255s!", falls below the root of another Web in the directory "%3!.100s!", which is different than the root of the logical parent Web (URL=%4!.100s!, path=%5!.100s!).