Title: Cannot activate the plugin
Last modified: August 21, 2016

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# Cannot activate the plugin

 *  Resolved [Aamir Rizwan](https://wordpress.org/support/users/neo7/)
 * (@neo7)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/cannot-activate-the-plugin-2/)
 * I am getting the following error when activating this plugin:
 *     ```
       Plugin could not be activated because it triggered a fatal error.
       ( ! ) Fatal error: Undefined class constant 'AGENTS' in
       http://www.techanger.com/wp-content/plugins/lite-cache/admin.php on line 20
       Call Stack
       #	Time	Memory	Function	Location
       1	0.0026	404576	{main}( )	..\plugins.php:0
       2	0.6751	25527816	do_action( )	..\plugins.php:150
       3	0.6752	25529304	call_user_func_array ( )	..\plugin.php:406
       4	0.6752	25529336	LiteCacheAdmin->hook_activate( )	..\plugin.php:406
       ```
   
 * I really want to use this plugin. I’m using Hyper Cache for the time being.
    
   [http://wordpress.org/extend/plugins/lite-cache/](http://wordpress.org/extend/plugins/lite-cache/)

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [Stefano Lissa](https://wordpress.org/support/users/satollo/)
 * (@satollo)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/cannot-activate-the-plugin-2/#post-3941160)
 * My fault, fixed on new version (affects only new installations).
 * Stefano.
 *  Thread Starter [Aamir Rizwan](https://wordpress.org/support/users/neo7/)
 * (@neo7)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/cannot-activate-the-plugin-2/#post-3941209)
 * Thanks !

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Cannot activate the plugin’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/lite-cache.svg)
 * [Lite Cache](https://wordpress.org/plugins/lite-cache/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/lite-cache/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/lite-cache/)
 * [Active Topics](https://wordpress.org/support/plugin/lite-cache/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/lite-cache/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/lite-cache/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [Aamir Rizwan](https://wordpress.org/support/users/neo7/)
 * Last activity: [12 years, 10 months ago](https://wordpress.org/support/topic/cannot-activate-the-plugin-2/#post-3941209)
 * Status: resolved