i am using strapi 4. I want to fetch data with ** populate parent** of table **features ** is null.
it will works when i use API:
/projects?populate[features][populate]=parent

but when i use this API to get data with parent of features is null,
/projects?populate[features][populate]=parent&filters[features][parent][$null]=true

it will be log an error:
{
“data”: null,
“error”: {
“status”: 500,
“name”: “InternalServerError”,
“message”: “Internal Server Error”
}
}
enter image description here

So what i need change in my API to do this?