node.js – Address is already in use after killing ports

I’ve killed this port 8080 a lot of times with npx kill-port 8080
but I still get an error saying:

Error: listen EADDRINUSE: address already in use :::8080

Here is the code

const app = express()
 app.post("/dblwebhook", webhook.listener(async vote => {
    console.log(`${vote.user} has voted me`)
     }))
  
  app.listen(8080)

Am I killing the port wrong? (This is on my centos 8 vps)