Title: WP Super cache creates “Uncaught TypeError” Last modified: May 17, 2024 --- # WP Super cache creates “Uncaught TypeError” * Resolved [berlinrob](https://wordpress.org/support/users/berlinrob/) * (@berlinrob) * [2 years ago](https://wordpress.org/support/topic/wp-super-cache-creates-uncaught-typeerror/) * For some days now I daily get an error message from WordPress saying my website has a “technical error”. * In the error details it says the following (in German due to my localization): * WordPress-Version 6.5.3 Aktives Theme: OceanWP (Version 3.5.5)Aktuelles Plugin: WP Super Cache (Version 1.12.1)PHP-Version 8.2.18 Fehler-Details * Ein Fehler vom Typ E_ERROR wurde in der Zeile 2937 der Datei /srv/www/htdocs/ mydomainname/wp-content/plugins/wp-super-cache/wp-cache.php verursacht. Fehlermeldung: Uncaught TypeError: array_unshift(): Argument #1 ($array) must be of type array, null given in /srv/www/htdocs/mydomainname/wp-content/plugins/wp-super-cache/ wp-cache.php:2937 Stack trace: 0 /srv/www/htdocs/mydomainname/wp-content/plugins/ wp-super-cache/wp-cache.php(2937): array_unshift() 1 /srv/www/htdocs/mydomainname/ wp-includes/class-wp-hook.php(326): wp_cache_plugin_actions() 2 /srv/www/htdocs/ mydomainname/wp-includes/plugin.php(205): WP_Hook->apply_filters() 3 /srv/www/ htdocs/mydomainname/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack- sync/src/modules/class-callables.php(377): apply_filters() 4 /srv/www/htdocs/ mydomainname/wp-includes/class-wp-hook.php(324): Automattic\Jetpack\Sync\Modules\ Callables->set_plugin_action_links() 5 /srv/www/htdocs/mydomainname/wp-includes/ class-wp-hook.php(348): WP_Hook->apply_filters() 6 /srv/www/htdocs/mydomainname/ wp-includes/plugin.php(517): WP_Hook->do_action() 7 /srv/www/htdocs/mydomainname/ wp-admin/includes/class-wp-screen.php(424): do_action() 8 /srv/www/htdocs/mydomainname/ wp-admin/includes/screen.php(243): WP_Screen->set_current_screen() 9 /srv/www/ htdocs/mydomainname/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack- sync/src/class-sender.php(527): set_current_screen() 10 /srv/www/htdocs/mydomainname/ wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-sync/src/class-sender. php(629): Automattic\Jetpack\Sync\Sender->get_items_to_send() 11 /srv/www/htdocs/ mydomainname/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-sync/ src/class-sender.php(484): Automattic\Jetpack\Sync\Sender->do_sync_for_queue() 12 /srv/www/htdocs/mydomainname/wp-content/plugins/jetpack/jetpack_vendor/automattic/ jetpack-sync/src/class-sender.php(359): Automattic\Jetpack\Sync\Sender->do_sync_and_set_delays() 13 /srv/www/htdocs/mydomainname/wp-content/plugins/jetpack/jetpack_vendor/automattic/ jetpack-sync/src/class-actions.php(739): Automattic\Jetpack\Sync\Sender->do_sync() 14 /srv/www/htdocs/mydomainname/wp-content/plugins/jetpack/jetpack_vendor/automattic/ jetpack-sync/src/class-actions.php(679): Automattic\Jetpack\Sync\Actions::do_cron_sync_by_type() 15 /srv/www/htdocs/mydomainname/wp-includes/class-wp-hook.php(324): Automattic\ Jetpack\Sync\Actions::do_cron_sync() 16 /srv/www/htdocs/mydomainname/wp-includes/ class-wp-hook.php(348): WP_Hook->apply_filters() 17 /srv/www/htdocs/mydomainname/ wp-includes/plugin.php(565): WP_Hook->do_action() 18 /srv/www/htdocs/mydomainname/ wp-cron.php(191): do_action_ref_array() 19 {main} * thrown * Do you have any idea how to get rid of this error? Many thanks in advance. Viewing 7 replies - 1 through 7 (of 7 total) * Plugin Author [Donncha O Caoimh (a11n)](https://wordpress.org/support/users/donncha/) * (@donncha) * [2 years ago](https://wordpress.org/support/topic/wp-super-cache-creates-uncaught-typeerror/#post-17763156) * That’s a really weird one. A bug I’ve never seen before. Do you have any other plugin/code that interacts with the plugin_action_links filter that modifies the links displayed under plugins on the Plugins page? You could search for the string “plugin_action_links” in your plugins folder and see if any plugin messes with it. Disable the plugin to test if the error goes away. * Thread Starter [berlinrob](https://wordpress.org/support/users/berlinrob/) * (@berlinrob) * [2 years ago](https://wordpress.org/support/topic/wp-super-cache-creates-uncaught-typeerror/#post-17763209) * ```wp-block-code Hm, I currently have 14 plugins active: AAWP Version 3.30.9 Akismet Anti-spam: Spam Protection Version 5.3.2 consentmanager Version 3.0.6 Jetpack Version 13.4.3 Jetpack Protect Version 2.1.0 Kirki Customizer Framework Version 5.1.0 Limit Login Attempts Version 1.7.2 Ocean Extra Version 2.2.7 Ocean Posts Slider Version 2.0.6 Print, PDF & Email by PrintFriendly Version 5.5.2 Quality Media Network Version 1.17.0 Statebuilt Facebook Page Like Popup WP Super Cache Version 1.12.1 wp-Typography ``` * I searched with the string you mentioned in my plugin folder, but nothing came up. * Plugin Author [Donncha O Caoimh (a11n)](https://wordpress.org/support/users/donncha/) * (@donncha) * [2 years ago](https://wordpress.org/support/topic/wp-super-cache-creates-uncaught-typeerror/#post-17783411) * On your Plugins page, in the WP Super Cache entry, do you see this below the name of the plugin? * “Settings | Deactivate” * They should be links. The warning comes because the list of links is empty, but it should have a “Deactivate” link there by default. * Thread Starter [berlinrob](https://wordpress.org/support/users/berlinrob/) * (@berlinrob) * [2 years ago](https://wordpress.org/support/topic/wp-super-cache-creates-uncaught-typeerror/#post-17783468) * Yes, I see this below the plugin name, in German though since I use WP with German localization. Here is a screenshot, the “Deactivate” link can be seen on the bottom left part of the screenshot: * [https://ibb.co/vLbBmk3](https://ibb.co/vLbBmk3) - This reply was modified 2 years ago by [berlinrob](https://wordpress.org/support/users/berlinrob/). - This reply was modified 2 years ago by [berlinrob](https://wordpress.org/support/users/berlinrob/). * Plugin Author [Donncha O Caoimh (a11n)](https://wordpress.org/support/users/donncha/) * (@donncha) * [2 years ago](https://wordpress.org/support/topic/wp-super-cache-creates-uncaught-typeerror/#post-17786243) * I’ll have to add a check to make sure $links is an array and if it’s not, then skip adding the Settings link. We’ll get that fixed in the next release. If you want to hide the warning until then, comment out or delete the add_filter line on line 2941 of wp-cache.php * ```wp-block-code add_filter( 'plugin_action_links', 'wp_cache_plugin_actions', 10, 2 ); ``` * Thread Starter [berlinrob](https://wordpress.org/support/users/berlinrob/) * (@berlinrob) * [2 years ago](https://wordpress.org/support/topic/wp-super-cache-creates-uncaught-typeerror/#post-17790906) * Thanks for the info. I am not so tech savvy, so I prefer to wait for the update instead of tinkering with the php-files myself. * Plugin Support [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * (@erania-pinnera) * [2 years ago](https://wordpress.org/support/topic/wp-super-cache-creates-uncaught-typeerror/#post-17791110) * Hi [@berlinrob](https://wordpress.org/support/users/berlinrob/), * That’s fair enough. I checked with our developers, and we might have a new plugin update release in around two weeks. However, it also depends on how well the release passes the necessary tests to confirm the deployment, so it could be slightly delayed. * We hope you can’t wait for it! Viewing 7 replies - 1 through 7 (of 7 total) The topic ‘WP Super cache creates “Uncaught TypeError”’ is closed to new replies. * ![](https://ps.w.org/wp-super-cache/assets/icon-256x256.png?rev=3506220) * [WP Super Cache](https://wordpress.org/plugins/wp-super-cache/) * [Frequently Asked Questions](https://wordpress.org/plugins/wp-super-cache/#faq) * [Support Threads](https://wordpress.org/support/plugin/wp-super-cache/) * [Active Topics](https://wordpress.org/support/plugin/wp-super-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-super-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-super-cache/reviews/) ## Tags * [cache](https://wordpress.org/support/topic-tag/cache/) * [error message](https://wordpress.org/support/topic-tag/error-message/) * [uncaught TypeError](https://wordpress.org/support/topic-tag/uncaught-typeerror/) * 7 replies * 3 participants * Last reply from: [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/) * Last activity: [2 years ago](https://wordpress.org/support/topic/wp-super-cache-creates-uncaught-typeerror/#post-17791110) * Status: resolved