Title: invalid HTTP response code for flag 'R'
Last modified: August 30, 2016

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# invalid HTTP response code for flag 'R'

 *  Resolved [davemccourt](https://wordpress.org/support/users/davemccourt/)
 * (@davemccourt)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/invalid-http-response-code-for-flag-r/)
 * Hi
 * I’m trying out NinjaFirewall but I am seeing a lot of these errors in my log:
 *     ```
       /htdocs/wp-content/plugins/ninjafirewall/.htaccess: RewriteRule: invalid HTTP response code for flag 'R'
       ```
   
 * Images aren’t displaying with the NinjaFirewall Wp admin settings.
 * Any advice?
 * [https://wordpress.org/plugins/ninjafirewall/](https://wordpress.org/plugins/ninjafirewall/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [nintechnet](https://wordpress.org/support/users/nintechnet/)
 * (@nintechnet)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/invalid-http-response-code-for-flag-r/#post-6357632)
 * Hi,
 * It looks like you are running an old Apache HTTP server (v2.0 or v2.1?).
    You
   can delete the `/htdocs/wp-content/plugins/ninjafirewall/.htaccess` file, that
   will solve your problem (that won’t affect NinjaFirewall).

Viewing 1 replies (of 1 total)

The topic ‘invalid HTTP response code for flag 'R'’ is closed to new replies.

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## Tags

 * ["internal server error"](https://wordpress.org/support/topic-tag/internal-server-error/)
 * [HTTP](https://wordpress.org/support/topic-tag/http/)

 * 1 reply
 * 2 participants
 * Last reply from: [nintechnet](https://wordpress.org/support/users/nintechnet/)
 * Last activity: [10 years, 10 months ago](https://wordpress.org/support/topic/invalid-http-response-code-for-flag-r/#post-6357632)
 * Status: resolved