AH01071: Got error 'PHP message: PHP Fatal error: Uncaught TypeError: Argument 1 passed to WP_Translation_Controller::set_locale() must be of the type string, null given, called in /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-includes/l10n.php on line 799 and defined in /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-includes/l10n/class-wp-translation-controller.php:87\nStack trace:\n#0 /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-includes/l10n.php(799): WP_Translation_Controller->set_locale(NULL)\n#1 /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-includes/l10n.php(1005): load_textdomain('wck', '/var/www/vhosts...', NULL)\n#2 /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-content/plugins/wck-custom-fields-and-custom-post-types-creator/wck.php(38): load_plugin_textdomain('wck', false, 'wck-custom-fiel...')\n#3 /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-settings.php(517): include_once('/var/www/vhosts...')\n#4 /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-config.php(95): require_once('/var/www/vhosts.....PHP message: PHP Fatal error: Uncaught TypeError: Argument 1 passed to WP_Translation_Controller::set_locale() must be of the type string, null given, called in /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-includes/l10n.php on line 799 and defined in /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-includes/l10n/class-wp-translation-controller.php:87\nStack trace:\n#0 /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-includes/l10n.php(799): WP_Translation_Controller->set_locale(NULL)\n#1 /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-includes/l10n.php(953): load_textdomain('default', '/var/www/vhosts...', NULL)\n#2 /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain()\n#3 [internal function]: WP_Fatal_Error_Handler->handle()\n#4 {main}\n thrown in /var/www/vhosts/henleyhousehotel.com/httpdocs/wp-includes/l10n/class-wp-translation-controller.php on line 87', referer: https://www.henleyhousehotel.com/wp-admin/plugin-install.php?s=wck&tab=search&type=term
White screen of death on front and back-end of website. Removing the plugin resolves the issue.