Docker Error bind: address already in use

When I run docker-compose up in my Docker project it fails with the following message:

Error starting userland proxy: listen tcp 0.0.0.0:3000: bind: address already in use

netstat -pna | grep 3000

shows this:

tcp        0      0 0.0.0.0:3000            0.0.0.0:*               LISTEN      -  

I've already tried docker-compose down, but it doesn't help.