https://www.plesk.com/kb/support/swiftmailer-symfonymailer-or-prestashop-messages-stopped-working-after-upgrading-plesk-to-version-18-0-45/
Swiftmailer/Symfonymailer or Prestashop messages stopped working after upgrading Plesk to version...
Symptoms After the upgrade to Plesk version 18.0.45, Swiftmailer/Symfonymailer or Prestashop messages stopped working with the following error message: PHP...