Request had insufficient authentication scopes. & ACCESS_TOKEN_SCOPE_INSUFFICIENT

Here is error showing in network

Here is javascript code

I had already tried all possibility but no work for me.

{"error": {"code": 403,"message": "The request is missing a valid API key.","errors": [      {"message": "The request is missing a valid API key.","domain": "global","reason": "forbidden"      }    ],"status": "PERMISSION_DENIED"  }}{"error": {"code": 403,"message": "Request had insufficient authentication scopes.","errors": [      {"message": "Insufficient Permission","domain": "global","reason": "insufficientPermissions"      }    ],"status": "PERMISSION_DENIED","details": [      {"@type": "type.googleapis.com/google.rpc.ErrorInfo","reason": "ACCESS_TOKEN_SCOPE_INSUFFICIENT","domain": "googleapis.com","metadata": {"method": "youtube.api.v3.V3DataChannelService.List","service": "youtube.googleapis.com"        }      }    ]  }}

getting this error in request had insufficient authentication scopes in network and in console getting error The request is missing a valid API key.