Unable to add htaccess at uploads in wordpress

#1
I am trying to set a .htaccess file at "/var/www/html/www/development/wp-content/uploads/" (I have a wordpress instance at /developmet/). The .htaccess looks like this.

Code:
<IfModule mod_rewrite.c>
    RewriteCond %{REQUEST_FILENAME} (unlocked-scopes.*)
    RewriteRule ^scopes/unlocked-scopes/(.*)$ dl-file.php?file=$1 [QSA,L]
</IfModule>
Now when I restart `service lsws restart` and try to access a file at `wp-content/uploads/scopes/unlocked-scopes/01bd94b3de_unlocked.pdf` I am getting


This page isn’t working
skopezy.com is currently unable to handle this request.


HTTP ERROR 500


When I remove htaccess restart then everything works.

I ahve tested the above code in my local apache host setup. Is there anything that I am missing ?
 
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