Fatal error: Uncaught Error: Call to undefined method WP_Textdomain_Registry::reset() in /home/customer/www/oxfordlearning.qa/public_html/wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php:139 Stack trace: #0 /home/customer/www/oxfordlearning.qa/public_html/wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php(119): WPML\ST\MO\Hooks\LanguageSwitch->resetTranslationAvailabilityInformation() #1 /home/customer/www/oxfordlearning.qa/public_html/wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php(73): WPML\ST\MO\Hooks\LanguageSwitch->changeMoObjects('ar') #2 /home/customer/www/oxfordlearning.qa/public_html/wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php(48): WPML\ST\MO\Hooks\LanguageSwitch->switchToLocale('ar') #3 /home/customer/www/oxfordlearning.qa/public_html/wp-includes/class-wp-hook.php(310): WPML\ST\MO\Hooks\LanguageSwitch->languageHasSwitched('ar') #4 /home/customer/www/oxfordlearning.qa/public_html/wp-includes in /home/customer/www/oxfordlearning.qa/public_html/wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php on line 139