Missing javascript .map files When I view the browser console whilst viewing the Dashboard for instance, I get a whole load of 404s for Javascript .map files. For example on a fresh update to v2.3 I get this lot reported as missing:

/admin/resources/lib/garnish-0.1.min.js/garnish-0.1.min.map/
/admin/resources/js/craft.js/craft.min.map/
/admin/resources/js/cp.js/cp.min.map/
/admin/resources/js/QuickPostWidget.js/QuickPostWidget.min.map/
/admin/resources/js/RecentEntriesWidget.js/RecentEntriesWidget.min.map/
/admin/resources/js/GetHelpWidget.js/GetHelpWidget.min.map/
/admin/resources/js/UpdatesWidget.js/UpdatesWidget.min.map/
/admin/resources/js/FeedWidget.js/FeedWidget.min.map/ 


It just looks like the paths a wrong, if I look in the /js/ folder, the .map files do actually exist. 

Is it something I should be concerned about? Everything seems like it's all working ok, so it's not a show stopper at all. I just find it a bit annoying to be honest, so if I can do something to turn off the requests that'd be nice.

EDIT: Solution

As per Jason's answer below, I had the following rule in my .htaccess file to add trailing slashes:

RewriteCond %{REQUEST_METHOD} !=POST
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+[^/])$ /$1/ [R=301,L]


I removed that and it has cured the issue. I have subsequently put the rule back in and the problem hasn't returned so it must have been cached somewhere.
If you are hosting on an Apache server, check your rewrite rules. The output provided appears to be appending a / to the end of the URL - which would most likely return a 404 error as it thinks the file is actually a directory.

To be more specific, check for any rewrite rules that add a trailing slash to directories (or in general). That is most likely the culprit.

Hope that helps.