danami
Silver Pleskian
@twebhosting Yes open a ticket with Plesk support and they should be able to fix it for you. We had the same error on one of my servers and they fixed it for us. This bug is different then the bug that was fixed in Plesk 18.0.59 - "PPPM-14305: authres library fails to parse the full spectrum of valid Authentication-Results: header values" was the bug that was just fixed.