Fatal error: Uncaught TypeError: Argument 1 passed to WP_Translation_Controller::set_locale() must be of the type string, null given, called in /home/.sites/920/site6900013/web/wp-includes/l10n.php on line 799 and defined in /home/.sites/920/site6900013/web/wp-includes/l10n/class-wp-translation-controller.php:87
Stack trace:
#0 /home/.sites/920/site6900013/web/wp-includes/l10n.php(799): WP_Translation_Controller->set_locale(NULL)
#1 /home/.sites/920/site6900013/web/wp-content/plugins/polylang/include/olt-manager.php(106): load_textdomain('ptb_extra', '/home/.sites/92...')
#2 /home/.sites/920/site6900013/web/wp-includes/class-wp-hook.php(326): PLL_OLT_Manager->load_textdomains('en')
#3 /home/.sites/920/site6900013/web/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#4 /home/.sites/920/site6900013/web/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#5 /home/.sites/920/site6900013/web/wp-content/plugins/polylang/frontend/choose-lang.php(112): do_action('pll_language_de...', 'en', Object(PLL_Lan in /home/.sites/920/site6900013/web/wp-includes/l10n/class-wp-translation-controller.php on line 87

Fatal error: Uncaught TypeError: Argument 1 passed to WP_Translation_Controller::set_locale() must be of the type string, null given, called in /home/.sites/920/site6900013/web/wp-includes/l10n.php on line 799 and defined in /home/.sites/920/site6900013/web/wp-includes/l10n/class-wp-translation-controller.php:87
Stack trace:
#0 /home/.sites/920/site6900013/web/wp-includes/l10n.php(799): WP_Translation_Controller->set_locale(NULL)
#1 /home/.sites/920/site6900013/web/wp-includes/l10n.php(953): load_textdomain('default', '/home/.sites/92...', NULL)
#2 /home/.sites/920/site6900013/web/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/.sites/920/site6900013/web/wp-includes/l10n/class-wp-translation-controller.php on line 87