Error --- New Server - Ubuntu 16

I fired up a brand new server, but got this error:

TASK [AdnanHodzic.containerized-wordpress : Run docker-compose up] **********************************************************
fatal: [almontecondo.com]: FAILED! => {"changed": true, "cmd": ["docker-compose", "-f", "docker-compose.yml", "up", "-d"], "delta": "0:00:00.331399", "end": "2020-05-06 18:19:46.734953", "msg": "non-zero return code", "rc": 1, "start": "2020-05-06 18:19:46.403554", "stderr": "Version in \"./docker-compose.yml\" is unsupported. You might be seeing this error because you're using the wrong Compose file version. Either specify a version of \"2\" (or \"2.0\") and place your service definitions under the `services` key, or omit the `version` key and place your service definitions at the root of the file to use version 1.\nFor more on the Compose file format versions, see https://docs.docker.com/compose/compose-file/", "stderr_lines": ["Version in \"./docker-compose.yml\" is unsupported. You might be seeing this error because you're using the wrong Compose file version. Either specify a version of \"2\" (or \"2.0\") and place your service definitions under the `services` key, or omit the `version` key and place your service definitions at the root of the file to use version 1.", "For more on the Compose file format versions, see https://docs.docker.com/compose/compose-file/"], "stdout": "", "stdout_lines": []}