Use lsof to find the process using port 3055, then kill it by PID in Terminal.[1][2]
Run this in Terminal:
sudo lsof -i :3055This lists processes using port 3055; look in the PID column to get the process ID you want to stop.[2][3]
Once you have the PID (replace 12345 with the actual number):
kill 12345If the process does not stop, you can force kill it (more aggressive, use only if needed):
kill -9 12345This frees port 3055 so another app can bind to it.[4][1][2]
If you just want a quick one-liner for that specific port:
kill -15 $(lsof -t -i :3055)This finds the PID using port 3055 and sends it a normal terminate signal in one command.[5][6]