We implemented a "pay now" button with react. Our implementation works as expected if we use env: 'production' but it fails with a "system error" message within the paypal popup if we set env: 'sandbox'. Client object has two elements: 'sandbox' and 'production' with relevant client keys.
I checked the sandbox client key on our paypal app and it is correct. Is there any known issue with sandbox accounts ? Is there a way to debug the issue?
