Update Mongoose API Methods currently used for Database Queries #149
Description
Most of the Mongoose API methods such as find(), remove() which are currently used inside of the Registry's route handlers are deprecated, as shown in the terminal when some of the endpoints are being called:
We can use the newer methods available in the latest version of Mongoose API such as findOne(), findOneAndDelete(), insertMany() and so on.
(More information on the latest API methods can be found here)
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