Title: Compatibility Test – Failures
Last modified: July 2, 2020

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# Compatibility Test – Failures

 *  Resolved [daverudge](https://wordpress.org/support/users/daverudge/)
 * (@daverudge)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/compatibility-test-failures/)
 * Hi
 * I am building a website in WordPress using the Phlox theme.
 * When ever I make any changes it effects a lot of the formatting on the page.
 * I run the W3 Total Cache Compatibility report and below are the failures, can
   anyone tell me how to fix this please:
 * Server Modules & Resources:
    Plugin Version: 0.14.2 PHP Version: 7.3.19; Web 
   Server: Apache FTP functions: Installed (required for Self-hosted (FTP) CDN support)
   Multibyte String support: Installed (required for Rackspace Cloud Files support)
   cURL extension: Installed (required for Amazon S3, Amazon CloudFront, Rackspace
   CloudFiles support) zlib extension: Installed (required for gzip compression 
   support) brotli extension: Not installed (required for brotli compression support)
   Opcode cache: PHP6 Memcached extension: Not installed Memcache extension: Not
   installed Redis extension: Not installed HTML Tidy extension: Installed (required
   for HTML Tidy minifier support) Mime type detection: Installed (Fileinfo) (required
   for CDN support) Hash function: Installed (hash) (required for NetDNA / MaxCDN
   CDN purge support) Open basedir: Off zlib output compression: Off set_time_limit:
   Available SSH2 extension: Not installed (required for Self-hosted (FTP) CDN SFTP
   support) mod_deflate: Not detected (required for disk enhanced Page Cache and
   Browser Cache) mod_env: Not detected (required for disk enhanced Page Cache and
   Browser Cache) mod_expires: Not detected (required for disk enhanced Page Cache
   and Browser Cache) mod_filter: Not detected (required for disk enhanced Page 
   Cache and Browser Cache) mod_ext_filter: Not detected (required for disk enhanced
   Page Cache and Browser Cache) mod_headers: Not detected (required for disk enhanced
   Page Cache and Browser Cache) mod_mime: Not detected (required for disk enhanced
   Page Cache and Browser Cache) mod_rewrite: Not detected (required for disk enhanced
   Page Cache and Browser Cache) mod_setenvif: Not detected (required for disk enhanced
   Page Cache and Browser Cache)
 * Regards
    Dave

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * (@vmarko)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/compatibility-test-failures/#post-13063517)
 * Hello [@daverudge](https://wordpress.org/support/users/daverudge/)
 * I am sorry about the issue you are experiencing and I am happy to assist you 
   with this.
    Is minify enabled while you are making the changes on the website?
   If so you should rebuild the minify after the changes are done, and purge the
   cache, or disable the minify while in process of building the website. Does the
   issue occur to both logged in and non logged in users? As for the compatibility
   test, not detected means you don’t use mod_php mode, so you probably use php-
   fpm. We cannot detect Apache modules in that case, but that doesn’t mean it is
   not installed/active. Thanks!
 *  Thread Starter [daverudge](https://wordpress.org/support/users/daverudge/)
 * (@daverudge)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/compatibility-test-failures/#post-13067928)
 * Hi Marko,
 * Thank you for your help
 * Dave

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Compatibility Test – Failures’ is closed to new replies.

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 * 2 replies
 * 2 participants
 * Last reply from: [daverudge](https://wordpress.org/support/users/daverudge/)
 * Last activity: [5 years, 11 months ago](https://wordpress.org/support/topic/compatibility-test-failures/#post-13067928)
 * Status: resolved