Title: Minify and WP super cache
Last modified: August 18, 2020

---

# Minify and WP super cache

 *  Resolved [ai4k Web Design](https://wordpress.org/support/users/soylaostia/)
 * (@soylaostia)
 * [6 years ago](https://wordpress.org/support/topic/minify-and-wp-super-cache/)
 * Hi,
 * Is there any conflict between the minify settings and Wp super cache?
 * When I activate this setting my web breaks. Any hints?
 * Thank you in advance.

Viewing 6 replies - 1 through 6 (of 6 total)

 *  [Harshad](https://wordpress.org/support/users/bornforphp/)
 * (@bornforphp)
 * [5 years, 12 months ago](https://wordpress.org/support/topic/minify-and-wp-super-cache/#post-13278797)
 * [@soylaostia](https://wordpress.org/support/users/soylaostia/) Do you also have
   minify settings enabled in WP Super cache? If yes can you please turn off the
   minify settings in WP Super cache and check if it helps to fix the issue?
 *  Thread Starter [ai4k Web Design](https://wordpress.org/support/users/soylaostia/)
 * (@soylaostia)
 * [5 years, 12 months ago](https://wordpress.org/support/topic/minify-and-wp-super-cache/#post-13278935)
 * Hi!,
 * I don’t think WP Super cache has a minify option. And I don’t have any other 
   minify plugin.
 *  [Harshad](https://wordpress.org/support/users/bornforphp/)
 * (@bornforphp)
 * [5 years, 12 months ago](https://wordpress.org/support/topic/minify-and-wp-super-cache/#post-13279134)
 * [@soylaostia](https://wordpress.org/support/users/soylaostia/) If you de-activate
   WP Super Cache does it helps to get back your site online?
 *  Thread Starter [ai4k Web Design](https://wordpress.org/support/users/soylaostia/)
 * (@soylaostia)
 * [5 years, 12 months ago](https://wordpress.org/support/topic/minify-and-wp-super-cache/#post-13279410)
 * I just did it and still the same error:
 * There has been a critical error on your website.
 *  [Harshad](https://wordpress.org/support/users/bornforphp/)
 * (@bornforphp)
 * [5 years, 12 months ago](https://wordpress.org/support/topic/minify-and-wp-super-cache/#post-13285202)
 * [@soylaostia](https://wordpress.org/support/users/soylaostia/)
 * Can you please enable debugging mode, Please add following lines to wp-config.
   php just before where it says: /* That’s all, stop editing! Happy publishing.*/
 * define( ‘WP_DEBUG’, true );
    define( ‘WP_DEBUG_DISPLAY’, false ); define( ‘WP_DEBUG_LOG’,
   true );
 * Then try to reload the page again.
 * A debug.log file should be created inside wp-content folder,which should contain
   error information in it, Please share the file with us.
 * Thanks,
    Harshad
 *  Thread Starter [ai4k Web Design](https://wordpress.org/support/users/soylaostia/)
 * (@soylaostia)
 * [5 years, 12 months ago](https://wordpress.org/support/topic/minify-and-wp-super-cache/#post-13286458)
 * Hi,
 * This is:
 * [18-Aug-2020 10:50:58 UTC] PHP Fatal error: Uncaught Exception: .heightClasses
   is undefined: failed at `.heightClasses((@number - 1));` /****/wp-content/themes/
   stack/style/css/mr_components/size.less on line 14 in /home/2/a/ai4k/www/wp-content/
   plugins/wp-optimize/vendor/marcusschwarz/lesserphp/lessc.inc.php:3796
    Stack 
   trace: #0 /****/wp-content/plugins/wp-optimize/vendor/marcusschwarz/lesserphp/
   lessc.inc.php(727): lessc_parser->throwError(‘.heightClasses …’, 380) #1 /****/
   wp-content/plugins/wp-optimize/vendor/marcusschwarz/lesserphp/lessc.inc.php(769):
   lessc->compileProp(Array, Object(stdClass), Object(stdClass)) #2 /****/wp-content/
   plugins/wp-optimize/vendor/marcusschwarz/lesserphp/lessc.inc.php(769): lessc-
   >compileProp(Array, Object(stdClass), Object(stdClass)) #3 /****/wp-content/plugins/
   wp-optimize/vendor/marcusschwarz/lesserphp/lessc.inc.php(769): lessc->compileProp(
   Array, Object(stdClass), Object(stdClass)) #4 /****/wp-content/plugins/wp-optimize/
   vendor/marcusschwarz/ in /****/wp-content/plugins/wp-optimize/vendor/marcusschwarz/
   lesserphp/lessc.inc.php on line 3796
 * And the line 14 on size.less:
 * 13.heightClasses(@number) when (@number > 0){
    14 .heightClasses((@number – 1));
   15 [@multiplier](https://wordpress.org/support/users/multiplier/): [@number](https://wordpress.org/support/users/number/)*
   10; 15 .height-@{multiplier}{ 17 height: [@number](https://wordpress.org/support/users/number/)*
   10vh; 18 } 19}
 * I hope it helps…

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Minify and WP super cache’ is closed to new replies.

 * ![](https://ps.w.org/wp-optimize/assets/icon-256x256.png?rev=1552899)
 * [WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance](https://wordpress.org/plugins/wp-optimize/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-optimize/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-optimize/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-optimize/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-optimize/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-optimize/reviews/)

 * 6 replies
 * 2 participants
 * Last reply from: [ai4k Web Design](https://wordpress.org/support/users/soylaostia/)
 * Last activity: [5 years, 12 months ago](https://wordpress.org/support/topic/minify-and-wp-super-cache/#post-13286458)
 * Status: resolved