I host my eCommerce site with WP Engine. Recently customers have been complaining of a 502 Error page when they go to the Cart or Checkout pages. This tends to only happen if a customer isn’t logged in. I did some research online and found other users encountering a similar problem caused by caching so WP Engine has set the cart & checkout pages to not be cached. The problem is still happening though and I’m not sure where to turn, our company is losing money because of this. We’ve updated everything to be current (WordPress, Theme, WooCommerce, Plugins). WP Engine support looked at the error logs and found that the last file opened before the 502 error occurs is:
/wp-content/plugins/woocommerce/templates/checkout/payment-method.php
This error started happening after upgrading the theme (to the version prior to 2.5.1)
