Title: PHP 8.1 deprecated warning
Last modified: January 29, 2022

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# PHP 8.1 deprecated warning

 *  Resolved [Jarko Piironen](https://wordpress.org/support/users/ipajen/)
 * (@ipajen)
 * [4 years, 4 months ago](https://wordpress.org/support/topic/php-8-1-deprecated-warning/)
 * Using PHP 8.1 and got the following deprecated warning for query-monitor
 * base64_decode(): Passing null to parameter #1 ($string) of type string is deprecated
   
   wp-content/plugins/worker/src/MWP/Worker/Request.php:198 Tillägg: query-monitor
 * If could be fixed for future releases would be greeat.Thanks

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

 *  Plugin Author [John Blackbourn](https://wordpress.org/support/users/johnbillion/)
 * (@johnbillion)
 * WordPress Core Developer
 * [4 years, 4 months ago](https://wordpress.org/support/topic/php-8-1-deprecated-warning/#post-15305926)
 * Please report this to the author of the “worker” plugin, thanks.
 *  Thread Starter [Jarko Piironen](https://wordpress.org/support/users/ipajen/)
 * (@ipajen)
 * [4 years, 4 months ago](https://wordpress.org/support/topic/php-8-1-deprecated-warning/#post-15305972)
 * [@johnbillion](https://wordpress.org/support/users/johnbillion/) Sure, but how
   its saying “Plugin: query-monitor” when its the “worker” plugin ? thanks
 *  Plugin Author [John Blackbourn](https://wordpress.org/support/users/johnbillion/)
 * (@johnbillion)
 * WordPress Core Developer
 * [4 years, 4 months ago](https://wordpress.org/support/topic/php-8-1-deprecated-warning/#post-15306028)
 * Unfortunately the “Component” detection in Query Monitor can’t always get it 
   100% correct. I made improvements to this in version 3.8 but it still sometimes
   blames itself 😀

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

The topic ‘PHP 8.1 deprecated warning’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [John Blackbourn](https://wordpress.org/support/users/johnbillion/)
 * Last activity: [4 years, 4 months ago](https://wordpress.org/support/topic/php-8-1-deprecated-warning/#post-15306028)
 * Status: resolved