An error with your payment method paypal on your store

[giuseppe.cosentino]

Hi,
Sometimes when I receive an order from a customer I get this email:

"An error with your payment method paypal on your store (my store). The details are logged in the file paypal.1.log.php".


I went to the log file and found this error:

2019-07-08 08:05:57 ERROR validateIpnContent: Invalid IPN validation: NO ANSWER FROM PAYPAL

Furthermore, in the vm backend, the order is pending although I have received the payment.
How I can resolve?

Joomla version: 3.9.5
VirtueMart 3.4.2

Thanks in advice

[jenkinhill]

See http://forum.virtuemart.net/index.php?topic=142945.msg504755#msg504755

[skueppers]

As far as I have been able to determine, there is a currently outstanding issue with Paypal that is causing some IPN messages to be garbled. I have been getting this error on about 5% of transactions for the last two weeks. Paypal has acknowledged the issue.

[AH]

Thank you for the update