TypeError: require(...).createCredentials is not a function

[roydpnkr]

TypeError: require(...).createCredentials is not a function
at starttls (C:\ELMSearch\SDL\node_modules\mailer\node_modules\nodemailer\lib\starttls.js:19:40)
at SMTPClient. (C:\ELMSearch\SDL\node_modules\mailer\node_modules\nodemailer\lib\smtp.js:527:22)
at SMTPClient._dataListener (C:\ELMSearch\SDL\node_modules\mailer\node_modules\nodemailer\lib\smtp.js:468:20)
at SMTPClient._onData (C:\ELMSearch\SDL\node_modules\mailer\node_modules\nodemailer\lib\smtp.js:642:14)
at Socket.emit (events.js:315:20)
at addChunk (_stream_readable.js:295:12)
at readableAddChunk (_stream_readable.js:271:9)
at Socket.Readable.push (_stream_readable.js:212:10)
at TCP.onStreamRead (internal/stream_base_commons.js:186:23)