Title: Error saving settings Last modified: April 30, 2021 --- # Error saving settings * Resolved [wilmart](https://wordpress.org/support/users/wilmart/) * (@wilmart) * [5 years, 1 month ago](https://wordpress.org/support/topic/error-saving-settings-3/) * Hi.. I’m using WP 5.7.1, PHP 8 I installed Travelers Map plugin, but if I want to modify the settings, I get an “error” when I press the “Save Changes” button. * Even without modify anything, I get this error once “Save Changes” button is pressed. * Please, could you help me? Viewing 9 replies - 1 through 9 (of 9 total) * Thread Starter [wilmart](https://wordpress.org/support/users/wilmart/) * (@wilmart) * [5 years, 1 month ago](https://wordpress.org/support/topic/error-saving-settings-3/#post-14386366) * Solved…. Don’t use PHP 8.0 in your hosting. * Thanks. * Plugin Author [Camille V](https://wordpress.org/support/users/socrapop/) * (@socrapop) * [5 years, 1 month ago](https://wordpress.org/support/topic/error-saving-settings-3/#post-14386849) * That’s what I thought when I saw your php version 🙂 Is it a problem you had only with my plugin? Even if php8 is still new I should have a look! * Plugin Author [Camille V](https://wordpress.org/support/users/socrapop/) * (@socrapop) * [5 years, 1 month ago](https://wordpress.org/support/topic/error-saving-settings-3/#post-14387084) * Après vérification, il s’agit de la librairie HTMLPurifier que j’utilise dans le plugin pour nettoyer les champs de HTML enregistrés dans la base de donnée qui émet une erreur sur PHP8, je vais voir s’ils ont un correctif ! * Plugin Author [Camille V](https://wordpress.org/support/users/socrapop/) * (@socrapop) * [5 years, 1 month ago](https://wordpress.org/support/topic/error-saving-settings-3/#post-14387539) * Woops sorry I answered in french without noticing x) The error comes from a library (HTMLPurifier) that I use to sanitize fields before saving them to the database. They have an update for this, so it will be integrated in the next update of Travelers map 🙂 * Plugin Author [Camille V](https://wordpress.org/support/users/socrapop/) * (@socrapop) * [5 years ago](https://wordpress.org/support/topic/error-saving-settings-3/#post-14435910) * v1.12.0 is up in a few minutes, fixing this issue 😉 * [leonlim007](https://wordpress.org/support/users/leonlim007/) * (@leonlim007) * [4 years, 11 months ago](https://wordpress.org/support/topic/error-saving-settings-3/#post-14548743) * I installed the v1.12.0 version. * But still have problem saving the setting. * “There has been a critical error on this website. Please check your site admin email inbox for instructions. * Learn more about troubleshooting WordPress.” * However my PHP version is 7.4 * Not exactly sure how to troubleshoot on my side. * Plugin Author [Camille V](https://wordpress.org/support/users/socrapop/) * (@socrapop) * [4 years, 11 months ago](https://wordpress.org/support/topic/error-saving-settings-3/#post-14551201) * Dear [@leonlim007](https://wordpress.org/support/users/leonlim007/), * Could you set WP_DEBUG to true, so we can have a meaningful error message? [https://wordpress.org/support/article/debugging-in-wordpress/#wp_debug](https://wordpress.org/support/article/debugging-in-wordpress/#wp_debug) * You can copy paste the error here, and set wp_debug to false again if your website is online 😉 * [leonlim007](https://wordpress.org/support/users/leonlim007/) * (@leonlim007) * [4 years, 11 months ago](https://wordpress.org/support/topic/error-saving-settings-3/#post-14551219) * Hi Camille V, `Fatal error: Uncaught Error: Call to undefined function ctype_lower() in /hermes/walnacweb05/walnacweb05aa/b1065/moo.leonlim007/defensepoliticsasia/ wp-content/plugins/travelers-map/includes/admin/HTMLPurifier/HTMLPurifier/Token/ Tag.php:44 Stack trace: #0 /hermes/walnacweb05/walnacweb05aa/b1065/moo.leonlim007/ defensepoliticsasia/wp-content/plugins/travelers-map/includes/admin/HTMLPurifier/ HTMLPurifier/TokenFactory.php(48): HTMLPurifier_Token_Tag->__construct('', Array)# 1 /hermes/walnacweb05/walnacweb05aa/b1065/moo.leonlim007/defensepoliticsasia/ wp-content/plugins/travelers-map/includes/admin/HTMLPurifier/HTMLPurifier/Lexer/ DOMLex.php(39): HTMLPurifier_TokenFactory->__construct() #2 /hermes/walnacweb05/ walnacweb05aa/b1065/moo.leonlim007/defensepoliticsasia/wp-content/plugins/travelers- map/includes/admin/HTMLPurifier/HTMLPurifier/Lexer.php(117): HTMLPurifier_Lexer_DOMLex- >__construct() #3 /hermes/walnacweb05/walnacweb05aa/b1065/moo.leonlim007/defensepoliticsasia/ wp-content/plugins/travelers-map/includes/admin/HTMLPurifier/H in /hermes/walnacweb05/ walnacweb05aa/b1065/moo.leonlim007/defensepoliticsasia/wp-content/plugins/travelers- map/includes/admin/HTMLPurifier/HTMLPurifier/Token/Tag.php on line 44 Fatal error: Uncaught Error: Call to undefined function PHPMailer\PHPMailer\ctype_alnum() in /hermes/walnacweb05/walnacweb05aa/b1065/moo.leonlim007/defensepoliticsasia/ wp-includes/PHPMailer/PHPMailer.php:1797 Stack trace: #0 /hermes/walnacweb05/ walnacweb05aa/b1065/moo.leonlim007/defensepoliticsasia/wp-includes/PHPMailer/ PHPMailer.php(1876): PHPMailer\PHPMailer\PHPMailer::isShellSafe('wwwuser@cgi. you...') #1 /hermes/walnacweb05/walnacweb05aa/b1065/moo.leonlim007/defensepoliticsasia/ wp-includes/PHPMailer/PHPMailer.php(1639): PHPMailer\PHPMailer\PHPMailer->mailSend(' Date: Sun, 13 J...', 'Howdy!\n\nSince W...') #2 /hermes/walnacweb05/walnacweb05aa/ b1065/moo.leonlim007/defensepoliticsasia/wp-includes/PHPMailer/PHPMailer.php( 1470): PHPMailer\PHPMailer\PHPMailer->postSend() #3 /hermes/walnacweb05/walnacweb05aa/ b1065/moo.leonlim007/defensepoliticsasia/wp-includes/pluggable.php(531): PHPMailer\ PHPMailer\PHPMailer->send() #4 /hermes/walnacweb05/walnacweb05aa/b1065/moo.leonlim007/ defensepoliticsasia/wp-includes/class-wp-recovery-mod in /hermes/walnacweb05/ walnacweb05aa/b1065/moo.leonlim007/defensepoliticsasia/wp-includes/PHPMailer/ PHPMailer.php on line 1797` * Hope it helps. - This reply was modified 4 years, 11 months ago by [leonlim007](https://wordpress.org/support/users/leonlim007/). * Plugin Author [Camille V](https://wordpress.org/support/users/socrapop/) * (@socrapop) * [4 years, 11 months ago](https://wordpress.org/support/topic/error-saving-settings-3/#post-14551295) * Well, you have a misconfiguration on your server, the PHP extension ctype is disabled. ctype extension is now built-in PHP, since PHP4.3.0. So something on your server is disabling it. * If you are on a local environment, Php install might be corrupted and you might need to reinstall. If you are hosted from somewhere, you should contact your host provider and ask them why ctype extension is not enabled on your environment. * To be honest, I don’t know anything about PHP extension, I just found some ressources on google: [https://www.php.net/manual/en/ctype.installation.php](https://www.php.net/manual/en/ctype.installation.php) [https://docs.moodle.org/311/en/admin/environment/php_extension/ctype](https://docs.moodle.org/311/en/admin/environment/php_extension/ctype) [https://www.drupal.org/project/htmlpurifier/issues/2273413](https://www.drupal.org/project/htmlpurifier/issues/2273413) Viewing 9 replies - 1 through 9 (of 9 total) The topic ‘Error saving settings’ is closed to new replies. * ![](https://ps.w.org/travelers-map/assets/icon-256x256.jpg?rev=2100131) * [Travelers' Map](https://wordpress.org/plugins/travelers-map/) * [Frequently Asked Questions](https://wordpress.org/plugins/travelers-map/#faq) * [Support Threads](https://wordpress.org/support/plugin/travelers-map/) * [Active Topics](https://wordpress.org/support/plugin/travelers-map/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/travelers-map/unresolved/) * [Reviews](https://wordpress.org/support/plugin/travelers-map/reviews/) ## Tags * [save](https://wordpress.org/support/topic-tag/save/) * [settings](https://wordpress.org/support/topic-tag/settings/) * 9 replies * 3 participants * Last reply from: [Camille V](https://wordpress.org/support/users/socrapop/) * Last activity: [4 years, 11 months ago](https://wordpress.org/support/topic/error-saving-settings-3/#post-14551295) * Status: resolved