I get this error “Error Processing Checkout. Please try again later.”

Hello!

I have recently built a website on woo-commerce. I have placed some test orders with Cash on Delivery as an option and the website seems to be working fine. When I select the other payment method, let’s say the Card option where I use tazapay plugin. It says “Error Processing Checkout. Please try again later.” Could you please help me out?

Things I’ve tried,

Removing all the plugins and checking [Doesn’t work]

Using a new theme [Doesn’t work]