Title: PHP warnings
Last modified: January 17, 2023

---

# PHP warnings

 *  Resolved [mondalaci](https://wordpress.org/support/users/mondalaci/)
 * (@mondalaci)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/php-warnings-152/)
 * I monitor the PHP warnings of my site with Rollbar because they are often a sign
   of larger issues.
 * Your plugin generates hundreds, if not thousands of PHP warnings monthly, of 
   which the following is the most prevalent:
 *     ```wp-block-code
       E_WARNING: unlink(/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/cache/wpfc-mobile-cache/wordpress/index.html): No such file or directory
       1
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/plugins/wp-fastest-cache/wpFastestCache.php" line 1530
       +1 non-project frame
       3
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/plugins/wp-fastest-cache/wpFastestCache.php" line 1530 in unlink [args]
       4
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/plugins/wp-fastest-cache/wpFastestCache.php" line 1401 in WpFastestCache::deleteHomePageCache
       5
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/plugins/wp-fastest-cache/wpFastestCache.php" line 481 in WpFastestCache::singleDeleteCache [args]
       6
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-includes/class-wp-hook.php" line 310 in WpFastestCache::clear_cache_after_woocommerce_order_status_changed [args]
       7
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-includes/class-wp-hook.php" line 332 in WP_Hook::apply_filters [args]
       8
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-includes/plugin.php" line 517 in WP_Hook::do_action [args]
       9
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/plugins/woocommerce/includes/class-wc-order.php" line 397 in do_action [args]
       10
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/plugins/woocommerce/includes/class-wc-order.php" line 245 in WC_Order::status_transition
       11
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/plugins/woocommerce/includes/class-wc-order.php" line 357 in WC_Order::save
       12
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/plugins/woocommerce/includes/legacy/api/v3/class-wc-api-orders.php" line 660 in WC_Order::update_status [args]
       13
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/plugins/woocommerce/includes/legacy/api/v3/class-wc-api-server.php" line 371 in WC_API_Orders::edit_order [args]
       14
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/plugins/woocommerce/includes/legacy/api/v3/class-wc-api-server.php" line 222 in WC_API_Server::dispatch
       15
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-content/plugins/woocommerce/includes/legacy/class-wc-legacy-api.php" line 113 in WC_API_Server::serve_request
       16
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-includes/class-wp-hook.php" line 308 in WC_Legacy_API::handle_rest_api_requests [args]
       17
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-includes/class-wp-hook.php" line 332 in WP_Hook::apply_filters
       18
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-includes/plugin.php" line 565 in WP_Hook::do_action [args]
       19
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-includes/class-wp.php" line 399 in do_action_ref_array [args]
       20
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-includes/class-wp.php" line 780 in WP::parse_request [args]
       21
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-includes/functions.php" line 1332 in WP::main [args]
       22
       File "/var/www/ultimatehackingkeyboard.com/wordpress/wp-blog-header.php" line 16 in wp
       23
       File "/var/www/ultimatehackingkeyboard.com/wordpress/index.php" line 17 in require [args]
       ```
   
 * Would you fix this warning? These warnings are alarming, and they count toward
   my monthly Rollbar quota, increasing my expenses.
 * Thanks for your plugin! I’ll probably buy the pro version soon.
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fphp-warnings-152%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Plugin Author [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * (@emrevona)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/php-warnings-152/#post-16382340)
 * I fixed the problem. please delete wp fastest cache and download the following
   version to get the latest changes.
   [https://downloads.wordpress.org/plugin/wp-fastest-cache.zip](https://downloads.wordpress.org/plugin/wp-fastest-cache.zip)
 *  Thread Starter [mondalaci](https://wordpress.org/support/users/mondalaci/)
 * (@mondalaci)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/php-warnings-152/#post-16386923)
 * Thanks for the quick fix! That did it!
 * Will you merge this fix to the free and pro version of the plugin?
 *  Plugin Author [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * (@emrevona)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/php-warnings-152/#post-16387466)
 * the problem exists in the free version and the changes will be available in the
   next version. but if you want to get the changes now,
 * please delete wp fastest cache and download the following version to get the 
   latest changes.
 * [https://downloads.wordpress.org/plugin/wp-fastest-cache.zip](https://downloads.wordpress.org/plugin/wp-fastest-cache.zip)
 * you are welcome 🙂 if you vote, you make me so happy. 
   [https://wordpress.org/support/plugin/wp-fastest-cache/reviews/](https://wordpress.org/support/plugin/wp-fastest-cache/reviews/)
 *  Thread Starter [mondalaci](https://wordpress.org/support/users/mondalaci/)
 * (@mondalaci)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/php-warnings-152/#post-16388281)
 * Already voted with 5 stars! 🙂 Thanks for the great support!
 *  Thread Starter [mondalaci](https://wordpress.org/support/users/mondalaci/)
 * (@mondalaci)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/php-warnings-152/#post-16388282)
 * Marking issue as resolved.
 *  Plugin Author [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * (@emrevona)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/php-warnings-152/#post-16389025)
 * thank you so much 🙂

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

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

 * ![](https://ps.w.org/wp-fastest-cache/assets/icon-256x256.png?rev=2064586)
 * [WP Fastest Cache - WordPress Cache Plugin](https://wordpress.org/plugins/wp-fastest-cache/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-fastest-cache/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-fastest-cache/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-fastest-cache/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-fastest-cache/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-fastest-cache/reviews/)

 * 6 replies
 * 2 participants
 * Last reply from: [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * Last activity: [3 years, 4 months ago](https://wordpress.org/support/topic/php-warnings-152/#post-16389025)
 * Status: resolved