Couldn't connect to Docker daemon - you might need to run `docker-machine start default` code example

Example 1: In the default daemon configuration on Windows , the docker client must be run elevated to connect.

docker-machine env --shell cmd default

Example 2: ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?

open the terminal and type sudo dockerd and leave it open
open new terminal and type sudo docker-compose up -d or sudo docker-compose build