Title: CachedMemoizeFunctions error
Last modified: February 3, 2025

---

# CachedMemoizeFunctions error

 *  Resolved [ffrank](https://wordpress.org/support/users/fagfrank/)
 * (@fagfrank)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/cachedmemoizefunctions-error/)
 * Hi,
   if I update version 8.4.1 to a later one, WordPress sends me the site malfunction
   email with the following wording:
 *     ```wp-block-code
       Plugin corrente: SEOPress (versione 8.5.1.1)Versione PHP 8.1.31Dettagli dell'errore====================Un errore di E_ERROR è stato causato nella linea 19 del file /home/t478o0up/public_html/wp-content/plugins/wp-seopress/src/Helpers/CachedMemoizeFunctions.php. Messaggio di errore: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "seopress_get_dynamic_variables" not found or invalid function name in /home/t478o0up/public_html/wp-content/plugins/wp-seopress/src/Helpers/CachedMemoizeFunctions.php:19Stack trace:#0 /home/t478o0up/public_html/wp-content/plugins/wp-seopress/src/Helpers/CachedMemoizeFunctions.php(19): call_user_func_array()#1 /home/t478o0up/public_html/wp-content/plugins/wp-seopress/seopress.php(223): SEOPress\Helpers\CachedMemoizeFunctions::SEOPress\Helpers\{closure}()#2 /home/t478o0up/public_html/wp-includes/class-wp-hook.php(324): seopress_dyn_variables_init()#3 /home/t478o0up/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters()#4 /home/t478o0up/public_html/wp-content/plugins/wp-seopress/inc/functions/options-titles-metas.php(12): apply_filters()#5 /home/t478o0up/public_html/wp-includes/class-wp-hook.php(324): seopress_titles_the_title()#6 /home/t478o0up/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters()#7 /home/t478o0up/public_html/wp-includes/general-template.php(1188): apply_filters()#8 /home/t478o0up/public_html/wp-includes/general-template.php(1311): wp_get_document_title()#9 /home/t478o0up/public_html/wp-includes/class-wp-hook.php(324): _wp_render_title_tag()#10 /home/t478o0up/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()#11 /home/t478o0up/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()#12 /home/t478o0up/public_html/wp-includes/general-template.php(3064): do_action()#13 /home/t478o0up/public_html/wp-content/themes/ctheme/404.php(6): wp_head()#14 /home/t478o0up/public_html/wp-content/plugins/wp-cerber/cerber-load.php(4635): include('/home/t478o0up/...')#15 /home/t478o0up/public_html/wp-content/plugins/wp-cerber/cerber-load.php(2448): cerber_404_page()#16 /home/t478o0up/public_html/wp-content/plugins/wp-cerber/cerber-load.php(2411): cerber_access_control()#17 /home/t478o0up/public_html/wp-includes/class-wp-hook.php(324): {closure}()#18 /home/t478o0up/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()#19 /home/t478o0up/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()#20 /home/t478o0up/public_html/wp-settings.php(704): do_action()#21 /home/t478o0up/public_html/wp-config.php(80): require_once('/home/t478o0up/...')#22 /home/t478o0up/public_html/wp-load.php(50): require_once('/home/t478o0up/...')#23 /home/t478o0up/public_html/wp-login.php(12): require('/home/t478o0up/...')#24 {main}  thrown
       ```
   
 * can you help me understand what is causing it?
   Thanks

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

 *  Plugin Author [Benjamin Denis](https://wordpress.org/support/users/rainbowgeek/)
 * (@rainbowgeek)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/cachedmemoizefunctions-error/#post-18282019)
 * Hi,
 * it seems some files are missing in your installation.
 * Try to completely delete the plugin from your WP admin, Plugins.
 * Then add it again by searching for “seopress”.
 *  Thread Starter [ffrank](https://wordpress.org/support/users/fagfrank/)
 * (@fagfrank)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/cachedmemoizefunctions-error/#post-18286945)
 * Hi Denis,
   following your advice, I reloaded all the plugin files and it seems
   that the error has disappeared.I don’t know how this happened because I always
   update the plugin via WordPress!Many thanks for your support.Greetings
 * Francesco
 *  Plugin Author [Benjamin Denis](https://wordpress.org/support/users/rainbowgeek/)
 * (@rainbowgeek)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/cachedmemoizefunctions-error/#post-18287032)
 * I’m glad it works now!

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

The topic ‘CachedMemoizeFunctions error’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [Benjamin Denis](https://wordpress.org/support/users/rainbowgeek/)
 * Last activity: [1 year, 4 months ago](https://wordpress.org/support/topic/cachedmemoizefunctions-error/#post-18287032)
 * Status: resolved