"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 : https://developers.google.com/youtube/partner/docs/v1/assetMatchPolicy/get?hl=en&apix_params=%7B"assetId"%3A"A309336333809367"%7D)

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 !