Title: Error 520
Last modified: June 9, 2019

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# Error 520

 *  [anitalianguy](https://wordpress.org/support/users/anitalianguy/)
 * (@anitalianguy)
 * [7 years ago](https://wordpress.org/support/topic/error-520-3/)
 * Hello,
 * I initially posted this under the Autoptimize page but after discussing I think
   the topic may be of your interest, and it would be fantastic if you guys could
   help me out with this one:
 * > Hello everyone, it is my first time posting so I hope I am in the right section
   > and I am asking the right questions.
   > Since this morning i have been experiencing an Error 520 on my website and 
   > this is what the log says:
   > `[09-Jun-2019 09:27:28 UTC] PHP Notice: Undefined variable: inlined_ccss_block
   > in /web/htdocs/www.aliceceramica.com/home/wp-content/plugins/autoptimize/classes/
   > autoptimizeStyles.php on line 885`
   > I am not too experienced and tried both to deactivate Autoptimize (which I 
   > assume is causing this issue) and restoring the whole Autoptimize folder from
   > a weekly backup.
   > Would you know how to get out of this situation?
   > Thank you
 * —
 * This is a link to the discussion: [https://wordpress.org/support/topic/error-520-2/#post-11619956](https://wordpress.org/support/topic/error-520-2/#post-11619956)
 * And this the last error I got after removing `define('WP_CACHE', true);` from
   the wp-config:
 * `[09-Jun-2019 11:32:10 UTC] PHP Warning: strpos(): Empty needle in /web/htdocs/
   www.aliceceramica.com/home/wp-includes/plugin.php on line 658`
 * Since that error I had no other error recorded in my log. Now everything is clean
   but I still get the 520 error. Odd!
 * Thank you for your help!
    -  This topic was modified 7 years ago by [anitalianguy](https://wordpress.org/support/users/anitalianguy/).
    -  This topic was modified 7 years ago by [anitalianguy](https://wordpress.org/support/users/anitalianguy/).
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-520-3%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Plugin Author [Donncha O Caoimh (a11n)](https://wordpress.org/support/users/donncha/)
 * (@donncha)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/error-520-3/#post-11661421)
 * I would say you should delete both plugins and install them again one by one 
   and make sure your site works after installing each.
 * Removing the WP_CACHE line won’t trigger that PHP warning about plugin.php so
   there might be something broken on your site.
 * Since your site doesn’t load, you’ll have to ftp to it or ask your host to delete
   those plugins.

Viewing 1 replies (of 1 total)

The topic ‘Error 520’ is closed to new replies.

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 * Last reply from: [Donncha O Caoimh (a11n)](https://wordpress.org/support/users/donncha/)
 * Last activity: [6 years, 11 months ago](https://wordpress.org/support/topic/error-520-3/#post-11661421)
 * Status: not resolved