Title: Update failed Last modified: March 7, 2023 --- # Update failed * Resolved [pwcredia](https://wordpress.org/support/users/pwcredia/) * (@pwcredia) * [3 years, 3 months ago](https://wordpress.org/support/topic/update-failed-91/) * Hello, I have been having the problem with the Polylang plugin for two months now that when I update my pages, the error “Update failed” occurs and I cannot create any pages. The error is caused by the Polylang plugin, I have already checked this. Can you please help me. Thank you Viewing 1 replies (of 1 total) * Thread Starter [pwcredia](https://wordpress.org/support/users/pwcredia/) * (@pwcredia) * [3 years, 3 months ago](https://wordpress.org/support/topic/update-failed-91/#post-16539278) * **Fatal error**: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function “pll_custom_flag” not found or invalid function name in /var/www/brc-solar.de/public_html/wp-includes/class-wp-hook.php:308 Stack trace: #0 /var/www/brc-solar.de/public_html/wp-includes/plugin.php(205): WP_Hook- >apply_filters() #1 /var/www/brc-solar.de/public_html/wp-content/plugins/polylang/ include/language.php(320): apply_filters() #2 /var/www/brc-solar.de/public_html/ wp-content/plugins/polylang/include/links-model.php(184): PLL_Language->set_flag()# 3 /var/www/brc-solar.de/public_html/wp-includes/class-wp-hook.php(310): PLL_Links_Model- >pll_languages_list() #4 /var/www/brc-solar.de/public_html/wp-includes/plugin. php(205): WP_Hook->apply_filters() #5 /var/www/brc-solar.de/public_html/wp-content/ plugins/polylang/include/model.php(133): apply_filters() #6 /var/www/brc-solar. de/public_html/wp-content/plugins/polylang/include/translated-object.php(570): PLL_Model->get_languages_list() #7 /var/www/brc-solar.de/public_html/wp-content/ plugins/polylang/include/translated-object.php(354): PLL_Translated_Object->validate_translations()# 8 /var/www/brc-solar.de/public_html/wp-content/plugins/polylang/modules/sync/ sync-tax.php(175): PLL_Translated_Object->get_translations() #9 /var/www/brc- solar.de/public_html/wp-includes/class-wp-hook.php(310): PLL_Sync_Tax->set_object_terms()# 10 /var/www/brc-solar.de/public_html/wp-includes/class-wp-hook.php(332): WP_Hook- >apply_filters() #11 /var/www/brc-solar.de/public_html/wp-includes/plugin.php( 517): WP_Hook->do_action() #12 /var/www/brc-solar.de/public_html/wp-includes/ taxonomy.php(2879): do_action() #13 /var/www/brc-solar.de/public_html/wp-includes/ post.php(5261): wp_set_object_terms() #14 /var/www/brc-solar.de/public_html/wp- content/plugins/polylang/include/translated-post.php(63): wp_set_post_terms()# 15 /var/www/brc-solar.de/public_html/wp-content/plugins/polylang/include/crud- posts.php(77): PLL_Translated_Post->set_language() #16 /var/www/brc-solar.de/ public_html/wp-content/plugins/polylang/include/crud-posts.php(105): PLL_CRUD_Posts- >set_default_language() #17 /var/www/brc-solar.de/public_html/wp-includes/class- wp-hook.php(310): PLL_CRUD_Posts->save_post() #18 /var/www/brc-solar.de/public_html/ wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #19 /var/www/brc- solar.de/public_html/wp-includes/plugin.php(517): WP_Hook->do_action() #20 /var/ www/brc-solar.de/public_html/wp-includes/post.php(4717): do_action() #21 /var/ www/brc-solar.de/public_html/wp-admin/includes/post.php(699): wp_insert_post()# 22 /var/www/brc-solar.de/public_html/wp-admin/post-new.php(66): get_default_post_to_edit()# 23 {main} thrown in **/var/www/brc-solar.de/public_html/wp-includes/class-wp- hook.php** on line **308** Viewing 1 replies (of 1 total) The topic ‘Update failed’ is closed to new replies. * ![](https://ps.w.org/polylang/assets/icon-256x256.png?rev=3433336) * [Polylang](https://wordpress.org/plugins/polylang/) * [Frequently Asked Questions](https://wordpress.org/plugins/polylang/#faq) * [Support Threads](https://wordpress.org/support/plugin/polylang/) * [Active Topics](https://wordpress.org/support/plugin/polylang/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/polylang/unresolved/) * [Reviews](https://wordpress.org/support/plugin/polylang/reviews/) * 1 reply * 1 participant * Last reply from: [pwcredia](https://wordpress.org/support/users/pwcredia/) * Last activity: [3 years, 3 months ago](https://wordpress.org/support/topic/update-failed-91/#post-16539278) * Status: resolved