Fatal error: Uncaught TypeError: Argument 1 passed to Automattic\WooCommerce\Utilities\StringUtil::starts_with() must be of the type string, null given, called in /homepages/35/d276292731/htdocs/clickandbuilds/FitnessIndustryTraining/wp-content/plugins/woocommerce/includes/class-wc-session-handler.php on line 330 and defined in /homepages/35/d276292731/htdocs/clickandbuilds/FitnessIndustryTraining/wp-content/plugins/woocommerce/src/Utilities/StringUtil.php:22 Stack trace: #0 /homepages/35/d276292731/htdocs/clickandbuilds/FitnessIndustryTraining/wp-content/plugins/woocommerce/includes/class-wc-session-handler.php(330): Automattic\WooCommerce\Utilities\StringUtil::starts_with(NULL, 'woocommerce') #1 /homepages/35/d276292731/htdocs/clickandbuilds/FitnessIndustryTraining/wp-includes/class-wp-hook.php(292): WC_Session_Handler->maybe_update_nonce_user_logged_out(0, NULL) #2 /homepages/35/d276292731/htdocs/clickandbuilds/FitnessIndustryTraining/wp-includes/plugin.php(212): WP_Hook->apply_filters(0, Array) #3 /homepages/35/d27629 in /homepages/35/d276292731/htdocs/clickandbuilds/FitnessIndustryTraining/wp-content/plugins/woocommerce/src/Utilities/StringUtil.php on line 22