Recently a wordpress site crashed after with the error : 

[pid 31317] PHP Fatal error: Uncaught Error: Cannot call constructor in /wp-content/plugins/woocommerce-services/classes/wc-api-dev/class-wc-rest-dev-data-continents-controller.php:47\nStack trace:\n#0 wp-content/plugins/woocommerce-services/woocommerce-services.php(922): WC_REST_Dev_Data_Continents_Controller->__construct()\n#1 wp-includes/class-wp-hook.php(287): WC_Connect_Loader->wc_api_dev_init(Object(WP_REST_Server))\n#2 
wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)\n#3 
wp-includes/plugin.php(478): WP_Hook->do_action(Array)\n#4 wp-includes/rest-api.php(506): do_action('rest_api_init', Object(WP_REST_Server))\n#5

/wp-content/plugins/disable-json-api/classes/helpers.php(10): rest_get_server()\n#6 wp-content/plugins/disable-json-api/classes/helpers.php(36): DRA_Helpers::get_all_rest_routes()\n#7  in wp-content/plugins/woocommerce-services/classes/wc-api-dev/class-wc-rest-dev-data-continents-controller.php on line 47, referer: wp-cron.php?doing_wp_cron

Disabling the woocommerce-services Plugin stopped the error showing

Upgrading Woo-Commerce to version 5.0.0 then re-enabling woocommerce-services Plugin fixed the issue