FileTable objects require the FILESTREAM database option DIRECTORY_NAME to be non-NULL. To create a FileTable in the database ...

FileTable objects require the FILESTREAM database option DIRECTORY_NAME to be non-NULL. To create a FileTable in the database '%1!s!', set the DIRECTORY_NAME option to a non-NULL value using ALTER DATABASE. Or, to set the DIRECTORY_NAME option to NULL, in the database '%2!s!' disable or drop the existing FileTables.