Validate class not found from basename Magento\Framework\Validator\EmailAddress

After Migrating a Magento site from shared hosting to a dedicated server running Plesk, when doing check out, I get an error message

When checking the error log var/log/exception.log, found following error message

To fix this, in Plesk change PHP settings for the website

Plesk PHP settings

Change include_path from


In the above, replace DOMAIN.TLD with your actual domain name.

See Magento

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