504 Error when applying payments

Everything we apply a payment we get a 504 Error. If you go to payments and look at the status it says unapplied and then after a period of time some payment (not all) shows completed. I’ve looked at other forum posts and still haven’t been able to solve the issue.

As a troubleshooting step we rebuilt the server and migrated the data. The issue still persists.


Are you able to check if it works correctly in the React app?