meilisearch: Error: SocketException: OS Error: Connection refused, errno = 111

when i am trying to post anything on meilisearch it is showing me the error: Error: SocketException: OS Error: Connection refused, errno = 111, address = 127.0.0.1, port = 41200 this is my code in flutter: http.post( Uri.parse('https://...aws_ec2_instance.../indexes'), body: json.encode({'uid': 'questions', 'primaryKey': 'id'}), );