Fatal error: Uncaught TypeError: WP_Translation_Controller::set_locale(): Argument #1 ($locale) must be of type string, null given, called in /home/gstudies/public_html/wp-includes/l10n.php on line 804 and defined in /home/gstudies/public_html/wp-includes/l10n/class-wp-translation-controller.php:87 Stack trace: #0 /home/gstudies/public_html/wp-includes/l10n.php(804): WP_Translation_Controller->set_locale(NULL) #1 /home/gstudies/public_html/wp-includes/l10n.php(960): load_textdomain('default', '/home/gstudies/...', NULL) #2 /home/gstudies/public_html/wp-content/plugins/polylang/include/olt-manager.php(75): load_default_textdomain(NULL) #3 /home/gstudies/public_html/wp-includes/class-wp-hook.php(326): PLL_OLT_Manager->load_textdomains('tr') #4 /home/gstudies/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #5 /home/gstudies/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 /home/gstudies/public_html/wp-content/plugins/polylang/frontend/choose-lang.php(112): do_action('pll_language_de...', 'tr', Object(PLL_Language)) #7 /home/gstudies/public_html/wp-content/plugins/polylang/frontend/choose-lang-url.php(82): PLL_Choose_Lang->set_language(Object(PLL_Language)) #8 /home/gstudies/public_html/wp-content/plugins/polylang/frontend/choose-lang-url.php(34): PLL_Choose_Lang_Url->set_language_from_url() #9 /home/gstudies/public_html/wp-content/plugins/polylang/frontend/frontend.php(131): PLL_Choose_Lang_Url->init() #10 /home/gstudies/public_html/wp-content/plugins/polylang/include/class-polylang.php(291): PLL_Frontend->init() #11 /home/gstudies/public_html/wp-content/plugins/polylang/include/class-polylang.php(234): Polylang->init_context('PLL_Frontend', Object(PLL_Model)) #12 /home/gstudies/public_html/wp-includes/class-wp-hook.php(324): Polylang->init('') #13 /home/gstudies/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #14 /home/gstudies/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #15 /home/gstudies/public_html/wp-settings.php(578): do_action('plugins_loaded') #16 /home/gstudies/public_html/wp-config.php(77): require_once('/home/gstudies/...') #17 /home/gstudies/public_html/wp-load.php(50): require_once('/home/gstudies/...') #18 /home/gstudies/public_html/wp-blog-header.php(13): require_once('/home/gstudies/...') #19 /home/gstudies/public_html/index.php(17): require('/home/gstudies/...') #20 {main} thrown in /home/gstudies/public_html/wp-includes/l10n/class-wp-translation-controller.php on line 87

Fatal error: Uncaught TypeError: WP_Translation_Controller::set_locale(): Argument #1 ($locale) must be of type string, null given, called in /home/gstudies/public_html/wp-includes/l10n.php on line 804 and defined in /home/gstudies/public_html/wp-includes/l10n/class-wp-translation-controller.php:87 Stack trace: #0 /home/gstudies/public_html/wp-includes/l10n.php(804): WP_Translation_Controller->set_locale(NULL) #1 /home/gstudies/public_html/wp-includes/l10n.php(960): load_textdomain('default', '/home/gstudies/...', NULL) #2 /home/gstudies/public_html/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain() #3 [internal function]: WP_Fatal_Error_Handler->handle() #4 {main} thrown in /home/gstudies/public_html/wp-includes/l10n/class-wp-translation-controller.php on line 87