how to kill processes that are on a port code example

Example 1: stop a process running on a port

# Print PID of process bound on that port.
fuser 8080/tcp

# Kill that process
fuser -k 8080/tcp

Example 2: kill process on port

lsof -i:3000           // Change 3000 to whatever your port is!
sudo kill 9 <PID>      // Change <PID> to the Pid number the above command returns