Argument 3 passed to Directus\\Services\\AbstractService::validatePayload() must be of the type array, null given

[abu7elo]

Hi All,

I was trying to add a new item "Collection name post" that have the following fields:

• title
• description
• user_id
• tags
• category < M2M Relational Field >

Below is my curl request:

`
curl --location --request POST 'http://directus.local/tajrobtak/items/post?access_token=2P50KvwMIdZrSSzwgtU*****'
--header 'Content-Type: application/json'
--data-raw '{

        "title": "Hello API",
        "description": "<p>Test</p>",
        "user_id": 1,
        "tags": [
            "ali",
            "mazen"
        ],
        "map": {
            "lat": 31.955330136228707,
            "lng": 35.92868328094483
        },
        "category":[1,2]
    }'

`

After consumed the endpoint, i got the below error message:

• HTTP: 500 Internal Server Error
• Response
  { "error": { "code": null, "message": "Argument 3 passed to Directus\\Services\\AbstractService::validatePayload() must be of the type array, null given, called in /Users/fayezabuhilow/Projects/www/tajrobtk/src/core/Directus/Services/ItemsService.php on line 238", "class": "TypeError", "file": "/Users/fayezabuhilow/Projects/www/tajrobtk/src/core/Directus/Services/AbstractService.php", "line": 380 } }
  So, could you please let me know how i can pass the category parameters in my request?