hi I was trying to run docker-compose build. get following error. can anyone help?

[gauravsanas88]

Traceback (most recent call last):
File "urllib3/connection.py", line 160, in _new_conn
File "urllib3/util/connection.py", line 84, in create_connection
File "urllib3/util/connection.py", line 74, in create_connection
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "urllib3/connectionpool.py", line 677, in urlopen
File "urllib3/connectionpool.py", line 392, in _make_request
File "http/client.py", line 1277, in request
File "http/client.py", line 1323, in _send_request
File "http/client.py", line 1272, in endheaders
File "http/client.py", line 1032, in _send_output
File "http/client.py", line 972, in send
File "urllib3/connection.py", line 187, in connect
File "urllib3/connection.py", line 172, in _new_conn
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7f7d4c147d10>: Failed to establish a new connection: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "requests/adapters.py", line 449, in send
File "urllib3/connectionpool.py", line 727, in urlopen
File "urllib3/util/retry.py", line 446, in increment
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='0.0.0.0', port=2375): Max retries exceeded with url: /version (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f7d4c147d10>: Failed to establish a new connection: [Errno 111] Connection refused'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "docker/api/client.py", line 214, in _retrieve_server_version
File "docker/api/daemon.py", line 181, in version
File "docker/utils/decorators.py", line 46, in inner
File "docker/api/client.py", line 237, in _get
File "requests/sessions.py", line 543, in get
File "requests/sessions.py", line 530, in request
File "requests/sessions.py", line 643, in send
File "requests/adapters.py", line 516, in send
requests.exceptions.ConnectionError: HTTPConnectionPool(host='0.0.0.0', port=2375): Max retries exceeded with url: /version (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f7d4c147d10>: Failed to establish a new connection: [Errno 111] Connection refused'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "docker-compose", line 3, in
File "compose/cli/main.py", line 81, in main
File "compose/cli/main.py", line 200, in perform_command
File "compose/cli/command.py", line 70, in project_from_options
File "compose/cli/command.py", line 153, in get_project
File "compose/cli/docker_client.py", line 43, in get_client
File "compose/cli/docker_client.py", line 170, in docker_client
File "docker/api/client.py", line 197, in init
File "docker/api/client.py", line 222, in _retrieve_server_version
docker.errors.DockerException: Error while fetching server API version: HTTPConnectionPool(host='0.0.0.0', port=2375): Max retries exceeded with url: /version (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f7d4c147d10>: Failed to establish a new connection: [Errno 111] Connection refused'))
[218106] Failed to execute script docker-compose

[hkaur-coursera]

Hi, it seems that the docker is not running on your machine. You would need to start it.