Hi I got problems installing DeepstackException: Deepstack connection error,

When I install it, try to use ui to test! Return this information

I made sure the port and ip are correct

DeepstackException: Deepstack connection error, check your IP and port: HTTPConnectionPool(host=‘deepstack’, port=268): Max retries exceeded with url: /v1/vision/detection (Caused by NewConnectionError(’<urllib3.connection.HTTPConnection object at 0x7f01417e0760>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution’))