Title: Undefined error Last modified: August 24, 2016 --- # Undefined error * Resolved [projectmunton](https://wordpress.org/support/users/projectmunton/) * (@projectmunton) * [11 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-4/) * Hi looks like a great plugin * I am just getting this error when trying to check it out locally … * Fatal error: Call to undefined method TGM_Plugin_Activation::get_instance() in wp-content/plugins/better-facebook-page-box/better-facebook-page-box.php on line 27 * Have you seen this error before? Many thanks in advance * [https://wordpress.org/plugins/better-facebook-page-box/](https://wordpress.org/plugins/better-facebook-page-box/) Viewing 9 replies - 1 through 9 (of 9 total) * Plugin Author [Daniele De Rosa](https://wordpress.org/support/users/bloodspencer/) * (@bloodspencer) * [11 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-4/#post-6100799) * Hi 🙂 * sorry for the late answer! * Please try to install the newest version, i fixed this error 🙂 * Greetings! * Thread Starter [projectmunton](https://wordpress.org/support/users/projectmunton/) * (@projectmunton) * [11 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-4/#post-6100834) * Hi 🙂 sorry for the late reply … I have been offline * I just updated the plying … but when I activate it .. my Admin goes to a white screen, for all pages? * Any idea why this might be? * Plugin Author [Daniele De Rosa](https://wordpress.org/support/users/bloodspencer/) * (@bloodspencer) * [11 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-4/#post-6100835) * Hmmm, very strange.. * Which theme do you´re using? And are you using the plugin “Visual composer”? * Greetings! * Plugin Author [Daniele De Rosa](https://wordpress.org/support/users/bloodspencer/) * (@bloodspencer) * [11 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-4/#post-6100836) * Would be helpful to set WP_DEBUG to ‘true’, maybe you get a notice which helps to solve your problem. * To set WP_DEBUG to true you have to open your wp-config.php in your wordpress root folder and edit the following line: * ``` define('WP_DEBUG', false); ``` * to * ``` define('WP_DEBUG', true); ``` * Then try to activate the plugin again 🙂 * Thread Starter [projectmunton](https://wordpress.org/support/users/projectmunton/) * (@projectmunton) * [11 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-4/#post-6100841) * Hi … just got the debug up and running 🙂 * getting a error connected with the theme as you suspected * Fatal error: Call to protected TGM_Plugin_Activation::__construct() from invalid context in framework/plugin-activation/class-tgm-plugin-activation.php on line 959 * Any reason why this might be causing an issue when used in conjunction with your plugin? * Plugin Author [Daniele De Rosa](https://wordpress.org/support/users/bloodspencer/) * (@bloodspencer) * [11 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-4/#post-6100842) * Hi, * thanks for your reply! The author of your theme called the TGM Plugin not correctly, he tried to call the __construct() function directly not using the tgmpa() function, so you get conflicts with both. * **Solution 1: ** * You can send a message to the author of your theme with a fix request. for the issue you can write the following: * > TGMPA should be called properly using the code from the example.php file. Implementations > which divert from that code , i.e. try to call __construct() directly not using > the tgmpa() function, causes errors and are impossible for us to support. * **Solution 2:** * If the author of your plugin is not contactable, you can send me access data to [mail@danielederosa.de](https://wordpress.org/support/topic/undefined-error-4/mail@danielederosa.de?output_format=md) and i will fix the issue in your theme. * Many greetings! * Thread Starter [projectmunton](https://wordpress.org/support/users/projectmunton/) * (@projectmunton) * [11 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-4/#post-6100843) * Cool … thats great thanks, very much appreciated 🙂 * I will contact the theme developer, to give him the feedback … hopefully he will update the theme for other users too 🙂 * If I have not luck I will come back to take you up on your offer for solution 2 * Really appreciate the time and assistance … good luck with the plugin !! * Plugin Author [Daniele De Rosa](https://wordpress.org/support/users/bloodspencer/) * (@bloodspencer) * [11 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-4/#post-6100844) * Thanks a lot! 🙂 * Just contact me again if your theme developer can´t help you. * Good luck! 😉 * [multivisionstudios](https://wordpress.org/support/users/multivisionstudios/) * (@multivisionstudios) * [10 years, 10 months ago](https://wordpress.org/support/topic/undefined-error-4/#post-6100934) * Hi Everyone, I’m running into this problem. After installing trying to ACTIVATE a plugin i got this message for my website [http://www.multivisionstudios.com](http://www.multivisionstudios.com) and i can not get passed this, everthing seems to be gone. Anyone can help? * error: * Fatal error: Call to protected TGM_Plugin_Activation::__construct 959 Viewing 9 replies - 1 through 9 (of 9 total) The topic ‘Undefined error’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/better-facebook-page-box_535355.svg) * [Better Facebook Page Box](https://wordpress.org/plugins/better-facebook-page-box/) * [Frequently Asked Questions](https://wordpress.org/plugins/better-facebook-page-box/#faq) * [Support Threads](https://wordpress.org/support/plugin/better-facebook-page-box/) * [Active Topics](https://wordpress.org/support/plugin/better-facebook-page-box/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/better-facebook-page-box/unresolved/) * [Reviews](https://wordpress.org/support/plugin/better-facebook-page-box/reviews/) * 9 replies * 3 participants * Last reply from: [multivisionstudios](https://wordpress.org/support/users/multivisionstudios/) * Last activity: [10 years, 10 months ago](https://wordpress.org/support/topic/undefined-error-4/#post-6100934) * Status: resolved