Title: Autoptimize and Error 400
Last modified: June 17, 2019

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# Autoptimize and Error 400

 *  Resolved [javiypilar](https://wordpress.org/support/users/javiypilar/)
 * (@javiypilar)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/autoptimize-and-error-400/)
 * Hi
 * First of all thank you SO much for AI1EC plugin. It’s a real masterpiece.
 * Currently I got an issue.
 * I use plugin Autoptimize that optimizes CSS and javascript.
 * This plugin causes a 404 error when I change the Posterboard view to any other
   view.
 * You can check the error in the URL I attached.
 * I hope you can show me how to fix it.
 * Thank you
    -  This topic was modified 6 years, 11 months ago by [javiypilar](https://wordpress.org/support/users/javiypilar/).

Viewing 1 replies (of 1 total)

 *  [Benjamin](https://wordpress.org/support/users/bsokic/)
 * (@bsokic)
 * [6 years, 10 months ago](https://wordpress.org/support/topic/autoptimize-and-error-400/#post-11674594)
 * Hi [@javiypilar](https://wordpress.org/support/users/javiypilar/),
 * Thank YOU for using our plugin 🙂
 * “Autoptimize” causes this issue or?
 * Please try to set permalinks to the default (Plain) and check if the issue is
   still there, the option can be found under WP dashboard > Settings > Permalinks.
 * Sincerely,
    Ben

Viewing 1 replies (of 1 total)

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## Tags

 * [css](https://wordpress.org/support/topic-tag/css/)
 * [java](https://wordpress.org/support/topic-tag/java/)
 * [js](https://wordpress.org/support/topic-tag/js/)

 * 1 reply
 * 2 participants
 * Last reply from: [Benjamin](https://wordpress.org/support/users/bsokic/)
 * Last activity: [6 years, 10 months ago](https://wordpress.org/support/topic/autoptimize-and-error-400/#post-11674594)
 * Status: resolved