Sometimes when running servers and databases, there are issues with something running already on a given port. The following commands allows to figure out what the processes are, and to kill all node
processes.
sudo NETSTAT - PLNT
KILLALL -9 NODE
KILL -9 <pid>
KILLALL -9 {source}
npm run lint -- --fix
console.log(JSON.stringify({object}, null, 2))
npm ci