Getting Error 500 Internal Server error on sandbox

Hi, my sandbox api returns OK when tested using the curl https://api-sandbox.coingate.com/v2/auth/test.

But when i try to make test checkout on woocommerce, i get error 500 notice. No response from payment gateway. Test mode checked in settings. Other crypto gateway works without issues.

Same error when I only enable woo + coingate + 2022 default theme. What could be the issues?

It’s a multisite install with individual subsite activation.