A project root pom.xml file includes a connection properties
<properties>
<aem.host>localhost</aem.host>
<aem.port>4502</aem.port>
<aem.publish.host>localhost</aem.publish.host>
<aem.publish.port>4503</aem.publish.port>
<sling.user>admin</sling.user>
<sling.password>admin</sling.password>
<vault.user>admin</vault.user>
<vault.password>admin</vault.password>
Make sure, that your host, port, user, and password are properly defined.