"500 Internal error" with the Youtube Content ID API

I'm actually trying to retrieves the policies of my Youtube assets id (following this documentation :
AssetMatchPolicy: get)

There is my HTTP Request : https://i.stack.imgur.com/LL4iU.png

And there is the 500 error i got when i launch this request :

{
  "error": {
    "code": 500,
    "message": "An internal error has occurred.",
    "errors": [
      {
        "message": "An internal error has occurred.",
        "domain": "youtubePartner",
        "reason": "internalError"
      }
    ]
  }
}

I launch it again multiple time at different moments of the day in case it was just due to a temporary server problem, but always the same error...

If anyone can help me understand what can cause this error and how to fix this it would be incredible ! Thanks in advance to everyone !