Hello @verysiberian
Thank you for reaching out.
Let me try to replicate this on WP 6.1 using Memcached and I’ll get back to you.
Thanks!
I see this, coming from Rank Math?
[10-Nov-2022 06:23:19 UTC] PHP Notice: Function wp_cache_flush_runtime was called <strong>incorrectly</strong>. Your object cache implementation does not support flushing the in-memory runtime cache. Please see <a href="https://ww.wp.xz.cn/support/article/debugging-in-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 6.1.0.) in /var/www/web/wp/wp-includes/functions.php on line 5835
[10-Nov-2022 06:23:19 UTC] PHP Stack trace:
[10-Nov-2022 06:23:19 UTC] PHP 1. {main}() /var/www/web/wp/wp-cron.php:0
[10-Nov-2022 06:23:19 UTC] PHP 2. do_action_ref_array($hook_name = 'action_scheduler_run_queue', $args = [0 => 'WP Cron']) /var/www/web/wp/wp-cron.php:188
[10-Nov-2022 06:23:19 UTC] PHP 3. WP_Hook->do_action($args = [0 => 'WP Cron']) /var/www/web/wp/wp-includes/plugin.php:565
[10-Nov-2022 06:23:19 UTC] PHP 4. WP_Hook->apply_filters($value = '', $args = [0 => 'WP Cron']) /var/www/web/wp/wp-includes/class-wp-hook.php:332
[10-Nov-2022 06:23:19 UTC] PHP 5. ActionScheduler_QueueRunner->run($context = 'WP Cron') /var/www/web/wp/wp-includes/class-wp-hook.php:308
[10-Nov-2022 06:23:19 UTC] PHP 6. ActionScheduler_QueueRunner->do_batch($size = 25, $context = 'WP Cron') /var/www/web/app/plugins/seo-by-rank-math/vendor/woocommerce/action-scheduler/classes/ActionScheduler_QueueRunner.php:132
[10-Nov-2022 06:23:19 UTC] PHP 7. ActionScheduler_QueueRunner->clear_caches() /var/www/web/app/plugins/seo-by-rank-math/vendor/woocommerce/action-scheduler/classes/ActionScheduler_QueueRunner.php:171
[10-Nov-2022 06:23:19 UTC] PHP 8. wp_cache_flush_runtime() /var/www/web/app/plugins/seo-by-rank-math/vendor/woocommerce/action-scheduler/classes/ActionScheduler_QueueRunner.php:187
[10-Nov-2022 06:23:19 UTC] PHP 9. _doing_it_wrong($function = 'wp_cache_flush_runtime', $message = 'Your object cache implementation does not support flushing the in-memory runtime cache.', $version = '6.1.0') /var/www/web/wp/wp-includes/cache-compat.php:145
[10-Nov-2022 06:23:19 UTC] PHP 10. trigger_error($message = 'Function wp_cache_flush_runtime was called <strong>incorrectly</strong>. Your object cache implementation does not support flushing the in-memory runtime cache. Please see <a href="https://ww.wp.xz.cn/support/article/debugging-in-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 6.1.0.)', $error_level = 1024) /var/www/web/wp/wp-includes/functions.php:5835
I have the same issue with object cache using memcached, WP 6.1.
I thought it was coming from Imagify because the imagify plugin and W3 Total Cache were updated at the same time, but Imagify’s support pointed to this Github issue which they think is related:
“It looks like this is coming from action scheduler usage of wp_cache_flush_runtime() function, and W3TC does not explicitly declare support for it with wp_cache_supports(). This change happened in v6.0 and v6.1 of WP. You can check this GitHub Issue for further information.”
https://github.com/W3EDGE/w3-total-cache/issues/584
