woocommerce check out page 500 error

Hi,

I got following error when customer try to check out.

`2020/11/21 15:50:17 [error] 11856#11856: *2712385 FastCGI sent in stderr: “PHP message: PHP Fatal error: Uncaught Error: Call to a member function is_type() on bool in /www/etakatho_436/public/wp-content/plugins/official-facebook-pixel/integration/FacebookWordpressWooCommerce.php:156
Stack trace:
#0 [internal function]: FacebookPixelPlugin\Integration\FacebookWordpressWooCommerce::createPurchaseEvent(5874)
#1 /www/etakatho_436/public/wp-content/plugins/official-facebook-pixel/core/ServerEventFactory.php(147): call_user_func_array(Array, Array)
#2 /www/etakatho_436/public/wp-content/plugins/official-facebook-pixel/integration/FacebookWordpressWooCommerce.php(138): FacebookPixelPlugin\Core\ServerEventFactory::safeCreateEvent(‘Purchase’, Array, Array, ‘woocommerce’)
#3 /www/etakatho_436/public/wp-includes/class-wp-hook.php(287): FacebookPixelPlugin\Integration\FacebookWordpressWooCommerce::trackPurchaseEvent(5874)
#4 /www/etakatho_436/public/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#5 /www/etakatho_436/public/wp-includes/plugin.php(478): WP_H” while reading response header from upstream, client: 210.14.99.26, server: https://www.etakatho.com, request: “GET /checkout/order-received/5874/?key=wc_order_74LlHOwaSzg0i HTTP/1.0”, upstream: “fastcgi://unix:/var/run/php7.4-fpm-etakatho.sock:”, host: “www.etakatho.com”, referrer: “https://www.etakatho.com/checkout/”