The REST API is a powerful part of WooCommerce which lets you read and write various parts of WooCommerce data such as orders, products, coupons, customers, and shipping zones.Aug 21, 2024
Top 5 Methods to Fix “Rest API Error”
Check for Conflicting Plugins.
Update WordPress and Plugins.
Verify URL Structure.
Increase PHP Memory Limit.
Clear Cache.
please read How to Fix Common Woo-Commerce REST API Issues?