Is there a way to get rid of [Object: null prototype] in GraphQL

You can do something like below,and [Object: null prototype] would disappear

const a = JSON.parse(JSON.stringify(args));

args.category is

[[Object: null prototype] { id: '5c28c79af62fad2514ccc788' }], 

JSON.parse(JSON.stringify(args.category) would be { id: '5c28c79af62fad2514ccc788' }