Problem with ajax woocomerce, what to do?

Question

WordPress

Hello everyone
There is a site on woocomerce, after the site was transferred to a hosting running nginx, ajax requests stopped working correctly, namely, on the cart page when changing the delivery method, the server returns the entire page instead of a separate part. For verification, the site was completely copied to its own server, on which everything works, tell me what could be the problem.
not working: shop.indposhiv.ua
working: 109.86.35.166/shop

Answer 1

I found a solution, everything turned out to be as trite as possible
https://aaronjholbrook.com/debugging-server-proble...