Understanding Architecture

			<title>Understanding Architecture &#8211; Royal Class</title>
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<b>Fatal error</b>:  Uncaught Error: Call to undefined method WP_Textdomain_Registry::reset() in /data01/virt104571/domeenid/www.royalclass.ee/htdocs/wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php:139
Stack trace:
#0 /data01/virt104571/domeenid/www.royalclass.ee/htdocs/wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php(119): WPML\ST\MO\Hooks\LanguageSwitch-&gt;resetTranslationAvailabilityInformation()
#1 /data01/virt104571/domeenid/www.royalclass.ee/htdocs/wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php(73): WPML\ST\MO\Hooks\LanguageSwitch-&gt;changeMoObjects('en_US')
#2 /data01/virt104571/domeenid/www.royalclass.ee/htdocs/wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php(48): WPML\ST\MO\Hooks\LanguageSwitch-&gt;switchToLocale('en_US')
#3 /data01/virt104571/domeenid/www.royalclass.ee/htdocs/wp-includes/class-wp-hook.php(310): WPML\ST\MO\Hooks\LanguageSwitch-&gt;languageHasSwitched('en')
#4 /data01/virt104571/domeenid/www.ro in <b>/data01/virt104571/domeenid/www.royalclass.ee/htdocs/wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php</b> on line <b>139</b><br />