Title: critical error Last modified: February 4, 2021 --- # critical error * Resolved [tdiamond59](https://wordpress.org/support/users/tdiamond59/) * (@tdiamond59) * [5 years, 3 months ago](https://wordpress.org/support/topic/critical-error-154/) * I can’t deactivate the plugin, here is the issue * An error of type E_ERROR was caused in line 217 of the file /hermes/walnacweb05/ walnacweb05an/b829/as.diamondtom/dgg/newwp/wp-content/plugins/jetpack/vendor/ automattic/jetpack-connection/legacy/class-jetpack-signature.php. Error message: Uncaught Error: Call to undefined function ctype_digit() in /hermes/walnacweb05/ walnacweb05an/b829/as.diamondtom/dgg/newwp/wp-content/plugins/jetpack/vendor/ automattic/jetpack-connection/legacy/class-jetpack-signature.php:217 Stack trace:# 0 /hermes/walnacweb05/walnacweb05an/b829/as.diamondtom/dgg/newwp/wp-content/plugins/ jetpack/vendor/automattic/jetpack-connection/src/class-client.php(162): Jetpack_Signature- >sign_request(‘UczNu5nD)6wmykj…’, 1612393512, ‘SSVlTNbq4q’, ”, ‘GET’, ‘[https://dashboa…’](https://dashboa…’);, NULL, false) #1 /hermes/walnacweb05/walnacweb05an/b829/as.diamondtom/dgg/newwp/ wp-content/plugins/jetpack/vendor/automattic/jetpack-connection/src/class-client. php(26): Automattic\Jetpack\Connection\Client::build_signed_request(Array, NULL)# 2 /hermes/walnacweb05/walnacweb05an/b829/as.diamondtom/dgg/newwp/wp-content/plugins/ jetpack/modules/stats.php(687): Automattic\Jetpack\Connection\Client::remote_request( Array) #3 /hermes/walnacweb05/walnacweb05an/b829/as.diamondtom/dgg/newwp/wp-content/ plugins/jetpack/modu * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fcritical-error-154%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 3 replies - 1 through 3 (of 3 total) * Thread Starter [tdiamond59](https://wordpress.org/support/users/tdiamond59/) * (@tdiamond59) * [5 years, 3 months ago](https://wordpress.org/support/topic/critical-error-154/#post-14003087) * found the issue, jetpack does not work with php version 7.4 I had to go back to 7.3 now jetpack is working and no critical error. * Plugin Author [Jeremy Herve](https://wordpress.org/support/users/jeherve/) * (@jeherve) * Jetpack Mechanic 🚀 * [5 years, 3 months ago](https://wordpress.org/support/topic/critical-error-154/#post-14003643) * Jetpack is compatible with PHP 7.4, but it would appear that the `ctype` extension is disabled in your instance of PHP at the moment. You should be able to enable that extension in your PHP configuration settings, or your hosting provider should be able to do it for you. * Once that extension is available in your installation of PHP 7.4, you should be all set. * Let us know how that goes! * [urbanjobforce1](https://wordpress.org/support/users/urbanjobforce1/) * (@urbanjobforce1) * [5 years, 3 months ago](https://wordpress.org/support/topic/critical-error-154/#post-14005561) * Thanks tdiamond59 “found the issue, jetpack does not work with php version 7.4 I had to go back to 7.3 now jetpack is working and no critical error.” Viewing 3 replies - 1 through 3 (of 3 total) The topic ‘critical error’ is closed to new replies. * ![](https://ps.w.org/jetpack/assets/icon.svg?rev=2819237) * [Jetpack - WP Security, Backup, Speed, & Growth](https://wordpress.org/plugins/jetpack/) * [Frequently Asked Questions](https://wordpress.org/plugins/jetpack/#faq) * [Support Threads](https://wordpress.org/support/plugin/jetpack/) * [Active Topics](https://wordpress.org/support/plugin/jetpack/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/jetpack/unresolved/) * [Reviews](https://wordpress.org/support/plugin/jetpack/reviews/) ## Tags * [critical error](https://wordpress.org/support/topic-tag/critical-error/) * 3 replies * 3 participants * Last reply from: [urbanjobforce1](https://wordpress.org/support/users/urbanjobforce1/) * Last activity: [5 years, 3 months ago](https://wordpress.org/support/topic/critical-error-154/#post-14005561) * Status: resolved