Title: Fatal error on plugin installation
Last modified: August 30, 2016

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# Fatal error on plugin installation

 *  Resolved Anonymous User
 * (@anonymized-14303347)
 * [10 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-on-plugin-installation/)
 * Hello,
 * Plugin could not be activated because it triggered a fatal error.
 * Fatal error: Class ‘Kanban_Admin’ not found in /var/www/web49/htdocs/wp-content/
   plugins/kanban/includes/class-admin.php on line 10
 * >> This is all I am getting.
 * Nicole
 * [https://wordpress.org/plugins/kanban/](https://wordpress.org/plugins/kanban/)

Viewing 6 replies - 1 through 6 (of 6 total)

 *  [Mrinal Roy](https://wordpress.org/support/users/mkrdip/)
 * (@mkrdip)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-on-plugin-installation/#post-6856893)
 * Hi Nicole,
 * Sorry for the inconvenience.
 * I think it’s an issue with your PHP version or conflict with other plugin. Would
   you mind to check if you’re using PHP 5.6 or greater? and try activate the plugin
   after deactivating other plugins.
 *  Thread Starter Anonymous User
 * (@anonymized-14303347)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-on-plugin-installation/#post-6857015)
 * Hi Mrinal,
 * I checked back with my hoster: I can choose between PHP 5.4 and PHP 5.5.
 * Under PHP 5.4, I deactivated all other plugins but one to keep the site private.
   It was not possible to activate your plugin.
 *  Thread Starter Anonymous User
 * (@anonymized-14303347)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-on-plugin-installation/#post-6857053)
 * Hello Mrinal,
 * Thanks. I already made it work under PHP 5.5.
 *  [Mrinal Roy](https://wordpress.org/support/users/mkrdip/)
 * (@mkrdip)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-on-plugin-installation/#post-6857054)
 * Glad to know that. Kudos to you.
 * Let us know how you’ve fixed this, so other can have a help if they face same.
 *  Thread Starter Anonymous User
 * (@anonymized-14303347)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-on-plugin-installation/#post-6857055)
 * I upgraded the PHP version from 5.4 to 5.5 right in the database settings with
   my wordpress host.
 *  [Mrinal Roy](https://wordpress.org/support/users/mkrdip/)
 * (@mkrdip)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-on-plugin-installation/#post-6857056)
 * Many thanks for the info.
 * Have a nice day, Cheers!

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Fatal error on plugin installation’ is closed to new replies.

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 * 6 replies
 * 2 participants
 * Last reply from: [Mrinal Roy](https://wordpress.org/support/users/mkrdip/)
 * Last activity: [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-on-plugin-installation/#post-6857056)
 * Status: resolved