Whenever I try to submit a Payment Request using PayPal as the Payment Gateway Account, ERPNext hangs for several seconds. No error comes up, nothing in the logs (at least nothing I could find), Payment Request stays in draft state and no email is sent. Same behaviour if I hit the Resend Payment Email button. An Integration Request log is created and it shows a token, so I guess my PayPal settings are correct. Email communication is working just fine in other parts of the system.
This is the second time I try this integration and it worked the first time (well at least email with payment link was sent). I don’t remember which version of ERPNext I was running at the time.
I am now running the latest version:
Frappe Framework: v7.2.29
Any idea of what could be wrong?