Changelog (v6.4.7...v6.4.8)
- bug symfony/symfony#57284 [Mime] Fix TextPart using an unknown File (@fabpot)
- bug symfony/symfony#57228 [Mime] fix PHP 7 compatibility (@xabbuh)
- bug symfony/symfony#57065 [Mime] Fixed
Mime\Message::ensureValidity()when a required header is set, but has an empty body (@rhertogh)