RDiPalma It's pretty much exactly as the error states, in that you have an opened Directory tag on line 6 of the example you paste here that isn't closed (generally there's no need to use the Directory tag for the root directory, but that's not what's causing the error here). Basically, you'd want to include "</Directory>" after the list of directives that apply to this directory. In your example, it would be after the "Require all granted" statement.
Have a look at https://httpd.apache.org/docs/2.4/mod/core.html#directory for more info if required.