wildfly throwing error while deploying war file

service org.wildfly.undertow.listener.https: Address already in use /0.0.0.0:8443

I checked standalone.xml file and I found this port is being used only once:

<socket-binding name="https" port="${jboss.https.port:8443}"/>

I also tried by changing this to 8444 but still getting the same error.

I checked on server by using command :

sudo lsof -i -P -n | grep 8443

due to this my war deployment is failing .

Is there any workaround?