ads still get blocked when a 404 happens

advanced/lighttpd.conf

@@ -7,6 +7,7 @@ server.modules = (
 )
 
 server.document-root        = "/var/www/html"
+server.error-handler-404	= "pihole/index.html"
 server.upload-dirs          = ( "/var/cache/lighttpd/uploads" )
 server.errorlog             = "/var/log/lighttpd/error.log"
 server.pid-file             = "/var/run/lighttpd.pid"