Invalid query parameter $elemMatch

[H3r3zy]

Hello,

In one of my project I need to find an object with characteristics store in array in this object.
like:

{
  name: 'Item1',
  characteristics: [
    {
      id: 1213,
      value: 12,
      otherField: '...',
      ...
    },
  ],
  ...
}

My search method is based on characteristics Id and value so I wanted to use $elemMatch.
But when I used it, an error occured.

'Invalid query parameter $elemMatch'

Steps to reproduce

ctx.app.services.items.find({
  query: {
    characteristics: {
      $elemMatch: {
        id: 1213,
        value: 12,
     },
   }
});

Expected behavior

What is expected is that the item with a characteristic with id 1213 and value 12 must be retrieve.

Actual behavior

Actually the result is an error: 'Invalid query parameter $elemMatch'

System configuration

I use feathersjs + feathers-mongoose

Module versions (especially the part that's not working):
feathers-mongoose: 8.3

NodeJS version:
12.17.0

Operating System:
WSL