Edited Field’s Error

Hi

Kindly note that it is recommended not to remove or override the default WooCommerce fields like billing_country and billing_email. Please note that when you provide validation for the state field or zip code field in any section, it is mandatory to have an active country field.
 
Further, if you are selling your products only to a few countries and you don’t want to let the customer select other countries from the checkout page. Instead of deleting/disabling the default country field, you can achieve your requirement by navigating to WooCommerce>>Settings>>General>>General options>>Selling location(s), selecting the option Sell to specific countries, and selecting the Countries as per your requirement.

Please enable billing_email and billing_country to fix this issue.

Thank you!