Restricted Viewport Paths
When configuring the URL for a viewport, some viewport paths are not allowed, as they override an existing Confluence paths.
The following viewport paths are not allowed:
/admin
/ajax
/display
/download
/images
/includes
/json
/plugins
/pages
/label
/jcaptcha
/s
/status
/x
/rest
/spaces
/styles
/rpc
/rest
/favicon.ico
/noop.jsp
/login.action
/synchrony
/synchrony-proxy