AWS phpmailer not working

Describes the cause and action for error messages.

Error Message(English)：
phpmailer not working

Resolution

PHPMailer not running with Xampp on Windows10
https://stackoverflow.com/questions/48208285/phpmailer-not-running-with-xampp-on-windows10

PHPMailer not working consistently
https://stackoverflow.com/questions/34360465/phpmailer-not-working-consistently

php - PHPMailer: SMTP Error: Could not connect to SMTP host - Stack ...
https://stackoverflow.com/questions/3477766/phpmailer-smtp-error-could-not-connect-to-smtp-host/3640・・・

PHPMailer can't send via postfix - Stack Overflow
https://stackoverflow.com/questions/39927267/phpmailer-cant-send-via-postfix?rq=1

Frequent 'phpmailer' Questions - Page 3 - Stack Overflow
https://stackoverflow.com/questions/tagged/phpmailer?page=3&sort=Frequent&pageSize=50

Highest Voted 'phpmailer' Questions - Page 3 - Stack Overflow
https://stackoverflow.com/questions/tagged/phpmailer?page=3&sort=votes

Newest 'phpmailer' Questions - Page 3 - Stack Overflow
https://stackoverflow.com/questions/tagged/phpmailer?sort=newest&page=3

Recently Active 'phpmailer' Questions - Page 5 - Stack Overflow
https://stackoverflow.com/questions/tagged/phpmailer?page=5&sort=active

Highest Voted 'phpmailer' Questions - Page 3 - Stack Overflow
https://stackoverflow.com/questions/tagged/phpmailer?page=3&sort=Votes&pageSize=50