Title: Deprecated function with PHP 8.1 Last modified: June 30, 2022 --- # Deprecated function with PHP 8.1 * [michaelsmartmove](https://wordpress.org/support/users/michaelsmartmove/) * (@michaelsmartmove) * [3 years, 11 months ago](https://wordpress.org/support/topic/deprecated-function-with-php-8-1/) * Hi, * I am getting the following error on a clients website which is running on PHP 8.1. * `Deprecated: base64_decode(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-content/plugins/worker/src/MWP/Worker/Request.php on line 198` Viewing 9 replies - 1 through 9 (of 9 total) * Plugin Support [shteffk](https://wordpress.org/support/users/shteffk/) * (@shteffk) * [3 years, 11 months ago](https://wordpress.org/support/topic/deprecated-function-with-php-8-1/#post-15784375) * Hey there, * Thank you for letting us know about this. * Can you tell me does this also happen when you try to use PHP 8.0 ? * Thread Starter [michaelsmartmove](https://wordpress.org/support/users/michaelsmartmove/) * (@michaelsmartmove) * [3 years, 11 months ago](https://wordpress.org/support/topic/deprecated-function-with-php-8-1/#post-15784399) * Hi [@shteffk](https://wordpress.org/support/users/shteffk/), * From what I can tell, it seems to work fine in PHP 8.0. * I sadly do not have full control of this clients hosting environment to change the PHP version but from my other clients where I do, on PHP 8.0 it doesn’t happen. - This reply was modified 3 years, 11 months ago by [michaelsmartmove](https://wordpress.org/support/users/michaelsmartmove/). * Plugin Support [shteffk](https://wordpress.org/support/users/shteffk/) * (@shteffk) * [3 years, 11 months ago](https://wordpress.org/support/topic/deprecated-function-with-php-8-1/#post-15784779) * Thank you for the update. * If you don’t mind me asking, when you mentioned the error, does the website not load at all or is this a warning you see in your logs or when you enable debug mode? * Thread Starter [michaelsmartmove](https://wordpress.org/support/users/michaelsmartmove/) * (@michaelsmartmove) * [3 years, 11 months ago](https://wordpress.org/support/topic/deprecated-function-with-php-8-1/#post-15784790) * The website still loads but I do get the error when I enable debug mode. * [NHWS](https://wordpress.org/support/users/nhws/) * (@nhws) * [3 years, 7 months ago](https://wordpress.org/support/topic/deprecated-function-with-php-8-1/#post-16099797) * Was this resolved? I get the same warning (a lot!) with php 8.1.10 and Manage WP Worker 4.9.14 * Plugin Support [Filip Mikić](https://wordpress.org/support/users/fmikic/) * (@fmikic) * [3 years, 7 months ago](https://wordpress.org/support/topic/deprecated-function-with-php-8-1/#post-16103740) * Hey there, * It appears that there are some minor incompatibilities between the last version of our Worker plugin and PHP 8.1. * Our developers are aware of this problem, and they are working towards resolving it, thank you for your feedback. * [handig](https://wordpress.org/support/users/handig/) * (@handig) * [3 years, 6 months ago](https://wordpress.org/support/topic/deprecated-function-with-php-8-1/#post-16180333) * Hi, Maybe the problem is bigger. I think this issue also leads to critical errors. * I have PHP 8.1 and ManageWP Worker 4.9.15. Get the same notices. Site seems to work okay, but when a form is submitted I get an critical error. The debug log doesn’t log it. But I made a screenshot video where the error is displayed: / wp-content/plugins/worker/src/MWP/Worker/Request.php on line 198 * I contacted ManageWP support, hope they get a solution for this. As a workaround I enabled the PHP extension PDO. Don’t know why, but the critical error doesn’t occur when that is enabled. * [Eusebiu Oprinoiu](https://wordpress.org/support/users/eusebiuoprinoiu/) * (@eusebiuoprinoiu) * [3 years, 6 months ago](https://wordpress.org/support/topic/deprecated-function-with-php-8-1/#post-16230728) * Are there any updates about this? I would like to move to PHP 8.1, and the ManageWP Worker is the only plugin that prevents me from doing it. * I see multiple deprecation warnings and generic warnings like the one below: * `Warning: Cannot modify header information - headers already sent by [file-path]` * Plugin Support [Filip Mikić](https://wordpress.org/support/users/fmikic/) * (@fmikic) * [3 years, 6 months ago](https://wordpress.org/support/topic/deprecated-function-with-php-8-1/#post-16241010) * Hey, * Would you mind opening a ticket from your ManageWP dashboard with as much information as you can so that we can forward it to our devs? * Cheers, Viewing 9 replies - 1 through 9 (of 9 total) The topic ‘Deprecated function with PHP 8.1’ is closed to new replies. * ![](https://ps.w.org/worker/assets/icon.svg?rev=1015191) * [ManageWP Worker](https://wordpress.org/plugins/worker/) * [Frequently Asked Questions](https://wordpress.org/plugins/worker/#faq) * [Support Threads](https://wordpress.org/support/plugin/worker/) * [Active Topics](https://wordpress.org/support/plugin/worker/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/worker/unresolved/) * [Reviews](https://wordpress.org/support/plugin/worker/reviews/) ## Tags * [php 8](https://wordpress.org/support/topic-tag/php-8/) * 9 replies * 6 participants * Last reply from: [Filip Mikić](https://wordpress.org/support/users/fmikic/) * Last activity: [3 years, 6 months ago](https://wordpress.org/support/topic/deprecated-function-with-php-8-1/#post-16241010) * Status: not resolved