Summary
Webform 3.19 の Resend e-mails で"You must select at least one email address to resend submission." というエラーが発生し、
メールの再送が行えない問題の解決方法。
webform/includes/webform.submissions.inc の 453行目から456行目
$form['actions']['resend'] = array(
'#type' => 'submit',
'#value' => t('Resend e-mails'),
);
$form['actions']['sendemail'] = array(
'#type' => 'submit',
'#value' => t('Resend e-mails'),
);
Reference
Resend e-mails [#2152409] | Drupal.orghttps://drupal.org/node/2152409