Title: 404 Errors Everywhere !
Last modified: December 15, 2020

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# 404 Errors Everywhere !

 *  Resolved [Paul33](https://wordpress.org/support/users/paul33/)
 * (@paul33)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/404-errors-everywhere-2/)
 * I installed and activated this plugin in order to get rid of multiple minified
   CSS/Java/HTML warnings in online SEO checkers. Since installing and activating
   it, I now have multiple 404 errors and my site SEO rating has plummeted !
 * The 404 links causing the issues are all in the format [https://www.website.co.uk/wp-content/cache/et/8/et-core-unified-16074572174032.min.css](https://www.website.co.uk/wp-content/cache/et/8/et-core-unified-16074572174032.min.css).
 * How do I stop this happening and, if I can’t, how do I backtrack out of this 
   as these errors seem worse than those I was trying to resolve ?!!!

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/404-errors-everywhere-2/#post-13795534)
 * that is a file from your theme/ pagebuilder (divi/ elegant themes) Paul, and 
   Autoptimize by default doesn’t touch files in wp-content/cache .. did you also
   implement a page caching solution (AO doesn’t do page caching) and if so can 
   you try purging that page cache?
 * frank
 *  Thread Starter [Paul33](https://wordpress.org/support/users/paul33/)
 * (@paul33)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/404-errors-everywhere-2/#post-13796366)
 * Hi Frank ….. thanks for replying.
 * I ran a page cache clearance late last night and have woken up to find all errors
   have now cleared so I may not understand what happened but all is now good !!!
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/404-errors-everywhere-2/#post-13796619)
 * happy to read so Paul 🙂
 * have a nice day!
    frank

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘404 Errors Everywhere !’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * Last activity: [5 years, 5 months ago](https://wordpress.org/support/topic/404-errors-everywhere-2/#post-13796619)
 * Status: resolved