These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
This looks like some kind of an encoding issue nothing else. I’m not sure it’s actually part of the phpMailer class or just the way your strings are being saved.
Additionally, try to use the most up to date PHP version and see if the error would be again experienced.
From GPU-powered inference and Kubernetes to managed databases and storage, get everything you need to build, scale, and deploy intelligent applications.