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This topic contains 3 replies, has 2 voices.

Last updated by Rohan Sadanandan 4 months ago.

Assigned support staff: Rohan Sadanandan.

Author Posts
March 6, 2020 at 1:04 pm #5635217

Ronan Power

Tell us what you are trying to do?
I am trying to set up WPML on my new site but keep running into the same error. I have disabled all plugins as instructed but this did not fix the issue.
Is there any documentation that you are following?
Yes, yours.
Is there a similar example that we can see?

What is the link to your site?

March 6, 2020 at 1:35 pm #5635463

Rohan Sadanandan


Thank you for contacting WPML Support.

If you are able to activate WPML, could you please enable the Debug Information so that we can provide faster support.

Please go to WPML > Support > Debug Information and give me the information in the next reply. You can read the detailed instruction here:

Also, please make sure that the WPML minimum requirements are met:


March 6, 2020 at 1:38 pm #5635523

Ronan Power

Hi thank you for the contact. I cant activate the plugin at all. Fatal error: Uncaught Error: Call to undefined function simplexml_load_file() in /var/www/html/wordpress/wp-content/plugins/sitepress-multilingual-cms/vendor/otgs/installer/includes/class-wp-installer.php:826 Stack trace: #0 /var/www/html/wordpress/wp-content/plugins/sitepress-multilingual-cms/vendor/otgs/installer/includes/class-wp-installer.php(78): WP_Installer->load_repositories_list() #1 /var/www/html/wordpress/wp-content/plugins/sitepress-multilingual-cms/vendor/otgs/installer/includes/class-wp-installer.php(59): WP_Installer->__construct() #2 /var/www/html/wordpress/wp-content/plugins/sitepress-multilingual-cms/vendor/otgs/installer/includes/functions-core.php(3): WP_Installer::instance() #3 /var/www/html/wordpress/wp-content/plugins/sitepress-multilingual-cms/vendor/otgs/installer/installer.php(15): WP_Installer() #4 /var/www/html/wordpress/wp-content/plugins/sitepress-multilingual-cms/vendor/otgs/installer/loader.php(164): include_once('/var/www/html/w...') #5 /var/www/html/wordpress/wp-includes/class-wp-hook.php in /var/www/html/wordpress/wp-content/plugins/sitepress-multilingual-cms/vendor/otgs/installer/includes/class-wp-installer.php on line 826

March 6, 2020 at 1:41 pm #5635617

Rohan Sadanandan


This PHP fatal error is related to a server compatibility issue, you can find a fix at:

In case you don't know how to install PHP missing extensions, please, refer to your server admin in order to learn more about how to proceed.

Please, let me know if you need any further clarification from our side.