Hi @jefvandegraaf and welcome to DevKinsta! The issue you’re seeing here is likely related to another application using the port number and conflicting with DevKinsta. Good news though is that very soon we’ll be releasing a fix for this. I’m sorry for the trouble. In the meantime if you’d like to continue to troubleshoot this, ensure that all other applications running are exited to try to find which application is taking up those ports.