Title: PHP Warning + Fatal error in PHP errorlog Last modified: June 7, 2024 --- # PHP Warning + Fatal error in PHP errorlog * Resolved [cybeardjm](https://wordpress.org/support/users/didierjm/) * (@didierjm) * [1 year, 11 months ago](https://wordpress.org/support/topic/php-warning-fatal-error-in-php-errorlog/) * Hi, installed this plugin on 2 blogs last night. This morning, while reviewing the PHP errorlog on the host, found these errors * 100s for both of them. Blogs work fine, but might be worth having a look at the code in this _(experimental)_ plugin… thx * [07-Jun-2024 09:45:13 UTC] PHP Warning: Undefined array key “background_image” in /srv/data/web/vhosts/[domain removed]/htdocs/wp-content/plugins/image-prioritizer/ class-image-prioritizer-background-image-styled-tag-visitor.php on line 44 * [07-Jun-2024 09:45:13 UTC] PHP Fatal error: Uncaught TypeError: Image_Prioritizer_Tag_Visitor:: is_data_url(): Argument #1 ($url) must be of type string, null given, called in /srv/data/web/vhosts/[domain removed]/htdocs/wp-content/plugins/image-prioritizer/ class-image-prioritizer-background-image-styled-tag-visitor.php on line 46 and defined in /srv/data/web/vhosts/[domain removed]/htdocs/wp-content/plugins/image- prioritizer/class-image-prioritizer-tag-visitor.php:61 Stack trace:#0 /srv/data/ web/vhosts/[domain removed]/htdocs/wp-content/plugins/image-prioritizer/class- image-prioritizer-background-image-styled-tag-visitor.php(46): Image_Prioritizer_Tag_Visitor- >is_data_url()#1 /srv/data/web/vhosts/[domain removed]/htdocs/wp-content/plugins/ optimization-detective/optimization.php(183): Image_Prioritizer_Background_Image_Styled_Tag_Visitor- >__invoke()#2 /srv/data/web/vhosts/[domain removed]/htdocs/wp-includes/class- wp-hook.php(324): od_optimize_template_output_buffer()#3 /srv/data/web/vhosts/[ domain removed]/htdocs/wp-includes/plugin.php(205): WP_Hook->apply_filters()# 4 /srv/data/web/vhosts/[domain removed]/htdocs/wp-content/plugins/optimization- detective/optimization.php(44): apply_filters()#5 [internal function]: {closure}()# 6 /srv/data/web/vhosts/[domain removed]/htdocs/wp-includes/functions.php(5420): ob_end_flush()#7 /srv/data/web/vhosts/[domain removed]/htdocs/wp-includes/class- wp-hook.php(324): wp_ob_end_flush_all()#8 /srv/data/web/vhosts/[domain removed]/ htdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()#9 /srv/data/ web/vhosts/[domain removed]/htdocs/wp-includes/plugin.php(517): WP_Hook->do_action()# 10 /srv/data/web/vhosts/[domain removed]/htdocs/wp-includes/load.php(1270): do_action()# 11 [internal function]: shutdown_action_hook()#12 {main} thrown in /srv/data/ web/vhosts/[domain removed]/htdocs/wp-content/plugins/image-prioritizer/class- image-prioritizer-tag-visitor.php on line 61 Viewing 5 replies - 1 through 5 (of 5 total) * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [1 year, 11 months ago](https://wordpress.org/support/topic/php-warning-fatal-error-in-php-errorlog/#post-17809814) * Thank you very much for reporting! I’ll investigate and should have a fix out by early next week. * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [1 year, 11 months ago](https://wordpress.org/support/topic/php-warning-fatal-error-in-php-errorlog/#post-17809826) * What version of PHP are you using? * And do you have an example URL on which this error was occurring? * Thread Starter [cybeardjm](https://wordpress.org/support/users/didierjm/) * (@didierjm) * [1 year, 11 months ago](https://wordpress.org/support/topic/php-warning-fatal-error-in-php-errorlog/#post-17810061) * Hi, * PHP version: 8.3.6 (Supports 64bit values) * There’s no specific URL to point to as the error shows. My blogs are www . didiermary. fr & amf . didiermary.fr. Overnight these errors both generated an increase of the size of my PHP errorlog of more than 4MB (it grew from 5MB to 9MB after I installed the plugin on both and I inspect it regularly for other errors around Webmention or ActivityPub). So I’d say probably, the errors appeared each time a page was called directly by a visitor or by the refresh of the cache… * Sincerely DJM - This reply was modified 1 year, 11 months ago by [cybeardjm](https://wordpress.org/support/users/didierjm/). * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [1 year, 11 months ago](https://wordpress.org/support/topic/php-warning-fatal-error-in-php-errorlog/#post-17810103) * I can clearly see the problem. I opened a [pull request](https://github.com/WordPress/performance/pull/1288) to fix and I’ve just pushed out the 0.1.1 version with the fix. Thanks again for reporting! * Thread Starter [cybeardjm](https://wordpress.org/support/users/didierjm/) * (@didierjm) * [1 year, 11 months ago](https://wordpress.org/support/topic/php-warning-fatal-error-in-php-errorlog/#post-17810107) * You’re welcome/ * Updated already on both. Will check tomorrow what’s in my PHP errorlog. Viewing 5 replies - 1 through 5 (of 5 total) The topic ‘PHP Warning + Fatal error in PHP errorlog’ is closed to new replies. * ![](https://ps.w.org/image-prioritizer/assets/icon.svg?rev=3099535) * [Image Prioritizer](https://wordpress.org/plugins/image-prioritizer/) * [Frequently Asked Questions](https://wordpress.org/plugins/image-prioritizer/#faq) * [Support Threads](https://wordpress.org/support/plugin/image-prioritizer/) * [Active Topics](https://wordpress.org/support/plugin/image-prioritizer/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/image-prioritizer/unresolved/) * [Reviews](https://wordpress.org/support/plugin/image-prioritizer/reviews/) * 5 replies * 2 participants * Last reply from: [cybeardjm](https://wordpress.org/support/users/didierjm/) * Last activity: [1 year, 11 months ago](https://wordpress.org/support/topic/php-warning-fatal-error-in-php-errorlog/#post-17810107) * Status: resolved