Title: Fatal error Last modified: August 21, 2016 --- # Fatal error * [jennatkinsmarketinggmail.com](https://wordpress.org/support/users/jennatkinsmarketinggmailcom/) * (@jennatkinsmarketinggmailcom) * [12 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-1178/) * I am encountering an intermittent error on my site; running WP 3.9, hosted by Go Daddy. Seems to be occurring more in Firefox, Chrome and IE than in Safari. * _Fatal error: PLL\_Model::\_languages\_list(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "PLL\_Language" of the object you are trying to operate on was loaded\ _before\_ unserialize() gets called or provide a \_\_autoload() function to load the class definition in /home/content/p3nexnas03/23/2083523/html/wp-content/plugins/ polylang/include/model.php on line 197_ * I have read this post: [http://wordpress.org/support/topic/polylang-sudden-fatal-error](http://wordpress.org/support/topic/polylang-sudden-fatal-error) but not sure I understand what the solution is. Can you please clarify what I can do? * [https://wordpress.org/plugins/polylang/](https://wordpress.org/plugins/polylang/) Viewing 14 replies - 1 through 14 (of 14 total) * Plugin Author [Chouby](https://wordpress.org/support/users/chouby/) * (@chouby) * [12 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-1178/#post-4859235) * Yes that’s the same error. It is not browser dependant has it is all related to server side. If it occurs, it means that something went wrong in your database. * What’s very annoying in what you say is that it is intermittent. The data is read at every page load (frontend or admin) but very rarely updated (change polylang settings, permalinks settings, polylang update). So if the database was corrupted, it should break at every page load and not intermittently… * Thread Starter [jennatkinsmarketinggmail.com](https://wordpress.org/support/users/jennatkinsmarketinggmailcom/) * (@jennatkinsmarketinggmailcom) * [12 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-1178/#post-4859247) * Yes, it is intermittent and has been the last few days. Currently, I can’t see anything on any of the pages except the error. * The first time this happened, I deleted the plug-in, re-installed and started over. I re-tagged all of the pages with the correct language, re-built the menus and it worked fine for about a day and then started again but intermittently. * Any ideas what I can do to try to fix? * Plugin Author [Chouby](https://wordpress.org/support/users/chouby/) * (@chouby) * [12 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-1178/#post-4859263) * I have no idea why you get this problem. Maybe a database corruption… At least I will provide you with a (very) quick fix avoid relying on this data. I suppose that you are using v1.4.5. * in polylang/include/model.php at line 139 replace * ``` if (false === ($languages = get_transient('pll_languages_list'))) { ``` * by * ``` if (true) { define('PLL_CACHE_HOME_URL', false); ``` * I did no test but it should work. * I would be interested if you could look for the entry _transient_pll_languages_list in the table wp_options and report the value field here. * [IoanaGaurean](https://wordpress.org/support/users/ioanagaurean/) * (@ioanagaurean) * [12 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-1178/#post-4859483) * I also get the same error: * > Fatal error: PLL_Model::_languages_list(): The script tried to execute a method > or access a property of an incomplete object. Please ensure that the class > definition “PLL_Language” of the object you are trying to operate on was loaded > _before_ unserialize() gets called or provide a __autoload() function to load > the class definition in /home/content/p3nexnas05_data02/06/2113106/html/wp- > content/plugins/polylang/include/model.php on line 192 * The error is also intermittent. I have noticed that the error appears after I post something: be it a normal post or making a new page. It tends to disappear after some time (sometimes longer, sometimes shorter) * Plugin Author [Chouby](https://wordpress.org/support/users/chouby/) * (@chouby) * [12 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-1178/#post-4859484) * Hi! * Have you the same host provider Godaddy? Did you try the fix I propose? * And also as mentionned, I would be interested if you could look for the entry _transient_pll_languages_list in the table wp_options and report the value field here. * Or you can try to repair your database to see if it comes from a database corruption. * [caltkult](https://wordpress.org/support/users/caltkult/) * (@caltkult) * [12 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-1178/#post-4859485) * Hi Chouby, * I’m experiencing the same issue. GoDaddy host. I tried your solution but it didn’t worked for me. Polylang version 1.5, WP 3.9.1. * As soon as I can I’ll provide you with the extraction from the database so you can check whether or not my data is corrupted. * Plugin Author [Chouby](https://wordpress.org/support/users/chouby/) * (@chouby) * [12 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-1178/#post-4859489) * It seems there is an issue whith this host. But I don’t know why. Could you try this other fix? * In polylang/include/model.php, replace the first line: * ```