Uncaught Error: Call to undefined method WP_Textdomain_Registry::reset()
in /work/sites/mediyka.com/wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php on line 139

Call stack:

1. WPML\ST\MO\Hooks\LanguageSwitch::resetTranslationAvailabilityInformation()
   wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php:119
2. WPML\ST\MO\Hooks\LanguageSwitch::changeMoObjects('ru_RU')
   wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php:73
3. WPML\ST\MO\Hooks\LanguageSwitch::switchToLocale('ru_RU')
   wp-content/plugins/wpml-string-translation/classes/MO/Hooks/LanguageSwitch.php:48
4. WPML\ST\MO\Hooks\LanguageSwitch::languageHasSwitched('ru')
   wp-includes/class-wp-hook.php:355
5. WP_Hook::apply_filters(NULL, array)
   wp-includes/class-wp-hook.php:377
6. WP_Hook::do_action(array)
   wp-includes/plugin.php:523
7. do_action('wpml_language_has_switched', 'ru', false, 'en')
   wp-content/plugins/sitepress-multilingual-cms/sitepress.class.php:1181
8. SitePress::switch_lang('ru')
   wp-content/plugins/sitepress-multilingual-cms/sitepress.class.php:2947
9. SitePress::get_ls_languages(array)
   wp-content/plugins/sitepress-multilingual-cms/classes/seo/class-wpml-seo-headlangs.php:45
10. WPML_SEO_HeadLangs::head_langs('')
    wp-includes/class-wp-hook.php:353
11. WP_Hook::apply_filters(NULL, array)
    wp-includes/class-wp-hook.php:377
12. WP_Hook::do_action(array)
    wp-includes/plugin.php:523
13. do_action('wp_head')
    wp-includes/general-template.php:3441
14. wp_head()
    wp-content/themes/edumall/header.php:24
15. require_once('/work/sites/mediyka....s/edumall/header.php')
    wp-includes/template.php:880
16. load_template('/work/sites/mediyka....s/edumall/header.php', true, array)
    wp-includes/template.php:815
17. locate_template(array, true, true, array)
    wp-includes/general-template.php:48
18. get_header()
    wp-content/themes/edumall/page.php:15
19. include('/work/sites/mediyka....mes/edumall/page.php')
    wp-includes/template-loader.php:132
20. require_once('/work/sites/mediyka..../template-loader.php')
    wp-blog-header.php:19
21. require('/work/sites/mediyka.com/wp-blog-header.php')
    index.php:17