TypeError: Cannot read property 'Decimal128' of null

[sibtainwani]

here is my code

I am using multer to upload files in my feathersjs(typescript) project. what I was trying to do is to store my images in mongoose database for that I used mongoose-blob-store, to store the binary data in the database. I tried a lot to do this using this library but it keeps on throwing me this error.

I don't know whether this is an issue or I am implementing it incorrectly