Cannot link to local files from within Confluence
It's not possible to link to a local file from within Confluence using a
Modern browsers have security features that prevent linking from remote web pages to local content. URLs that begin with the
file:// URI Scheme can only be loaded directly (by typing them into the location bar) or from pages that are loaded using the
file:// URI scheme.
You can work around the problem by either importing the content into Confluence itself or by setting up a local web server that can host the content using another protocol which won't trigger this error (