Title: PHP Warnings
Last modified: January 15, 2020

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# PHP Warnings

 *  Resolved [picadera](https://wordpress.org/support/users/picadera/)
 * (@picadera)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/php-warnings-91/)
 * Hi all,
 * Great plugin and I am a happy user of Critical CSS and Shortpixels because of
   you.
 * I switched hosts recently and started to see these warnings coming up quite a
   bit in the error logs:
 * PHP message: PHP Warning: file_put_contents(/home/wp/disk/wordpress/wp-content/
   cache/autoptimize/autoptimize_1fe2cc38ff239151a1bee702aecd81c6.img): failed to
   open stream: No such file or directory in /home/wp/disk/wordpress/wp-content/
   plugins/autoptimize/classes/autoptimizeCache.php on line 111
 * This happens for multiple different autoptimize files.
 * Any idea what I can do to fix this? I want to avoid unnecessary load on the CPU.
 * Thank you!
    Philipp
    -  This topic was modified 6 years, 2 months ago by [picadera](https://wordpress.org/support/users/picadera/).

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

 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/php-warnings-91/#post-12330884)
 * can you try adding this code snippet;
 *     ```
       add_filter('autoptimize_filter_cache_checkdirs_on_write','__return_true');
       ```
   
 * frank
 *  Thread Starter [picadera](https://wordpress.org/support/users/picadera/)
 * (@picadera)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/php-warnings-91/#post-12334091)
 * Thanks! That worked!
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/php-warnings-91/#post-12335004)
 * you’re welcome, feel free to [leave a review of the plugin and support here](https://wordpress.org/support/plugin/autoptimize/reviews/#new-post)!
   🙂

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

The topic ‘PHP Warnings’ is closed to new replies.

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## Tags

 * [php](https://wordpress.org/support/topic-tag/php/)
 * [warning](https://wordpress.org/support/topic-tag/warning/)

 * 3 replies
 * 2 participants
 * Last reply from: [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * Last activity: [6 years, 2 months ago](https://wordpress.org/support/topic/php-warnings-91/#post-12335004)
 * Status: resolved