Title: Critical Errors when Activating/Deleting Plugin Last modified: October 27, 2022 --- # Critical Errors when Activating/Deleting Plugin * Resolved [deeman001](https://wordpress.org/support/users/deeman001/) * (@deeman001) * [3 years, 7 months ago](https://wordpress.org/support/topic/critical-errors-when-activating-deleting-plugin/) * Just today I’m gettin a critical error when this plugin is activated, so I tried deleting the plugin and I get an error as well, see below. * Activation Fail Message: * ``` Fatal error: Uncaught Error: Undefined constant "YellowTree\GeoipDetect\DataSources\Fastah\CURL_HTTP_VERSION_2_0" in /var/www/vhosts/finleysbarbershop.com/httpdocs/wp-content/plugins/geoip-detect/data-sources/fastah.php on line 188 Call stack: YellowTree\G\D\F\FastahSource::__construct() wp-content/plugins/geoip-detect/data-sources/fastah.php:279 include_once() wp-content/plugins/geoip-detect/geoip-detect.php:95 include_once() wp-admin/includes/plugin.php:2313 plugin_sandbox_scrape() wp-admin/plugins.php:192 Query Monitor ``` * ———————————————- * `Fatal error: Uncaught Error: Undefined constant "YellowTree\GeoipDetect\DataSources\ Fastah\CURL_HTTP_VERSION_2_0" in /var/www/vhosts/finleysbarbershop.com/httpdocs/ wp-content/plugins/geoip-detect/data-sources/fastah.php:188 Stack trace: #0 / var/www/vhosts/finleysbarbershop.com/httpdocs/wp-content/plugins/geoip-detect/ data-sources/fastah.php(279): YellowTree\GeoipDetect\DataSources\Fastah\FastahSource- >__construct() #1 /var/www/vhosts/finleysbarbershop.com/httpdocs/wp-content/plugins/ geoip-detect/geoip-detect.php(95): include_once('...') #2 /var/www/vhosts/finleysbarbershop. com/httpdocs/wp-admin/includes/plugin.php(2313): include_once('...') #3 /var/ www/vhosts/finleysbarbershop.com/httpdocs/wp-admin/plugins.php(192): plugin_sandbox_scrape()# 4 {main} thrown in /var/www/vhosts/finleysbarbershop.com/httpdocs/wp-content/ plugins/geoip-detect/data-sources/fastah.php on line 188` * ———————————————- * Delete Fail Message: * `Deletion failed: .wp-die-message { display: none; } Fatal error: Uncaught Error: Undefined constant "YellowTree\GeoipDetect\DataSources\Fastah\CURL_HTTP_VERSION_2_0& quot;in /var/www/vhosts/finleysbarbershop.com/httpdocs/wp-content/plugins/geoip- detect/data-sources/fastah.php on line 188Call stack:YellowTree\G\D\F\FastahSource:: __construct()wp-content/plugins/geoip-detect/data-sources/fastah.php:279include_once() wp-content/plugins/geoip-detect/geoip-detect.php:95include_once()wp-admin/includes/ plugin.php:1253uninstall_plugin()wp-admin/includes/plugin.php:958delete_plugins() wp-admin/includes/ajax-actions.php:4668wp_ajax_delete_plugin()wp-includes/class- wp-hook.php:307WP_Hook::apply_filters()wp-includes/class-wp-hook.php:331WP_Hook:: do_action()wp-includes/plugin.php:476do_action()wp-admin/admin-ajax.php:187Query MonitorThere has been a critical error on this website.Learn more about troubleshooting WordPress.` * My site is info: ### wp-core ### version: 6.0.3 * Thank you for letting me know what I should do. Darren Viewing 6 replies - 1 through 6 (of 6 total) * [Benjamin Pick](https://wordpress.org/support/users/benjamin4/) * (@benjamin4) * [3 years, 7 months ago](https://wordpress.org/support/topic/critical-errors-when-activating-deleting-plugin/#post-16140269) * Which PHP version are you using? Please try uploading 5.1.1 manually, this should fix the problem. * Thread Starter [deeman001](https://wordpress.org/support/users/deeman001/) * (@deeman001) * [3 years, 7 months ago](https://wordpress.org/support/topic/critical-errors-when-activating-deleting-plugin/#post-16140317) * Hi Benjamin, I’ll try to uploading manually * Server architecture Linux 3.10.0-042stab144.1 x86_64 * Web server Apache * PHP version 8.1.11 * Thread Starter [deeman001](https://wordpress.org/support/users/deeman001/) * (@deeman001) * [3 years, 7 months ago](https://wordpress.org/support/topic/critical-errors-when-activating-deleting-plugin/#post-16140330) * Benjamin, the new version worked for me. Thanks for the quick reply. * Darren * [Benjamin Pick](https://wordpress.org/support/users/benjamin4/) * (@benjamin4) * [3 years, 7 months ago](https://wordpress.org/support/topic/critical-errors-when-activating-deleting-plugin/#post-16140332) * Perfect! * [shaunhaage](https://wordpress.org/support/users/shaunhaage/) * (@shaunhaage) * [3 years, 1 month ago](https://wordpress.org/support/topic/critical-errors-when-activating-deleting-plugin/#post-16668690) * I have tried the above steps and I am still getting this error. Is there anything else I can try here? * We are currently running 8.0 - This reply was modified 3 years, 1 month ago by [shaunhaage](https://wordpress.org/support/users/shaunhaage/). * [Benjamin Pick](https://wordpress.org/support/users/benjamin4/) * (@benjamin4) * [3 years, 1 month ago](https://wordpress.org/support/topic/critical-errors-when-activating-deleting-plugin/#post-16679599) * Can you post the PHP error you are seeing, please? - This reply was modified 3 years, 1 month ago by [Benjamin Pick](https://wordpress.org/support/users/benjamin4/). Viewing 6 replies - 1 through 6 (of 6 total) The topic ‘Critical Errors when Activating/Deleting Plugin’ is closed to new replies. * ![](https://ps.w.org/geoip-detect/assets/icon-256x256.jpg?rev=978998) * [Geolocation IP Detection](https://wordpress.org/plugins/geoip-detect/) * [Frequently Asked Questions](https://wordpress.org/plugins/geoip-detect/#faq) * [Support Threads](https://wordpress.org/support/plugin/geoip-detect/) * [Active Topics](https://wordpress.org/support/plugin/geoip-detect/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/geoip-detect/unresolved/) * [Reviews](https://wordpress.org/support/plugin/geoip-detect/reviews/) * 6 replies * 3 participants * Last reply from: [Benjamin Pick](https://wordpress.org/support/users/benjamin4/) * Last activity: [3 years, 1 month ago](https://wordpress.org/support/topic/critical-errors-when-activating-deleting-plugin/#post-16679599) * Status: resolved