Fatal PHP Error – PHPMailer exception on empty author meta

  • When an author has been deleted completely from the system or empty AddReplyTo() params passed, a fatal error is triggered on post save. Stack trace below.

    NOTICE: PHP message: PHP Fatal error:  Uncaught PHPMailer\PHPMailer\Exception: Invalid address:  (Reply-To):  in /var/www/html/wp/wp-includes/PHPMailer/PHPMailer.php:1092
Stack trace:
#0 /var/www/html/wp/wp-includes/PHPMailer/PHPMailer.php(1059): PHPMailer\PHPMailer\PHPMailer->addOrEnqueueAnAddress('Reply-To', '', '')
#1 /var/www/html/wp-content/plugins/email-post-changes/class.email-post-changes.php(262): PHPMailer\PHPMailer\PHPMailer->addReplyTo('', '')
#2 /var/www/html/wp/wp-includes/class-wp-hook.php(307): Email_Post_Changes->phpmailer_init(Object(PHPMailer\PHPMailer\PHPMailer))
#3 /var/www/html/wp/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array)
#4 /var/www/html/wp/wp-includes/plugin.php(522): WP_Hook->do_action(Array)
#5 /var/www/html/wp/wp-includes/pluggable.php(538): do_action_ref_array('phpmailer_init', Array)
#6 /var/www/html/wp-content/plugins/email-post-changes/class.email-post-changes.php(234): wp_mail(Array, '[SITE] Page c...', '<h2>Page change...')
#7 /var/www/html/wp/wp-includes/class-wp-hook.php(307): Emai in /var/www/html/wp/wp-includes/PHPMailer/PHPMailer.php on line 1092
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