Unexpected input(s) 'content_type', valid inputs are ['connection_url', 'server_address', 'server_port', 'secure', 'username', 'password', 'subject', 'to', 'from', 'body', 'html_body', 'cc', 'bcc', 'reply_to', 'in_reply_to', 'ignore_cert', 'convert_markdown', 'attachments', 'priority', 'nodemailerlog', 'nodemailerdebug']