We need to upload the last major version of all the documents in a library to an ftp server.
Through a http request I am able to get the urls for the previous versions of a file:

I can filter the response array by the version I am looking for (last published major version) and extract the Url from the json object with: body('Filter_array_-_Document_versions')[0]?['Url']

The url I get back is always in the following format: _vti_history/<ID>/<Libraryname>/<Filename>.docx
In the next step I try to retrieve the file contents using this url. But whatever I try, i keep on getting 404 File not found errors:

What am I doing wrong here?
If my approach is completely wrong, is there any other way to achieve my goal (downloading the file content for the last major version of a document)?