Pinging ec2-18-181-2-157.ap-northeast-1.compute.amazonaws.com [18.181.2.157] with 32 bytes of data: Request timed out. Request timed out. Request timed out. Request timed out. Ping statistics for 18.181.2.157: Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),