Fatal error: Cannot redeclare WP_REST_Controller::get_item_permissions_check() in /home/ossystem/www/wp-includes/rest-api/endpoints/class-wp-rest-controller.php on line 168

Fatal error: Uncaught Error: Call to a member function set() on null in /home/ossystem/www/wp-includes/l10n.php:786 Stack trace: #0 /home/ossystem/www/wp-includes/l10n.php(874): load_textdomain('default', '/home/ossystem/...', 'fr_FR') #1 /home/ossystem/www/wp-includes/class-wp-fatal-error-handler.php(47): load_default_textdomain() #2 [internal function]: WP_Fatal_Error_Handler->handle() #3 {main} thrown in /home/ossystem/www/wp-includes/l10n.php on line 786