NodeJS : TypeError: Cannot read property 'findOne' of undefined

NodeJS : TypeError: Cannot read property 'findOne' of undefined
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As promised, I have a secret feature that I want to reveal to you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
Then, type the letters 'awesome' on the keyboard.
The progress bar on YouTube will be altered to a flashing rainbow.

A brief presentation of myself,
Hello, I am Delphi.
I am here to assist you in getting the answers you need.
NodeJS : TypeError: Cannot read property 'findOne' of undefined
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property 'findOne' Cannot TypeError: undefined read of : NodeJS