[keycloak-user] Error while building Keycloak

Hi All, I have made a few changes to the keycloak code for a little customization of my own and i am getting the following error while running the command (mvn install -Pdistribution). [ERROR] Failed to execute goal on project keycloak-spring-boot-adapter: Could not resolve dependencies for project org.keycloak:keycloak-spring-boot-adapter:jar:1.6.0.Final-SNAPSHOT: The following artifacts could not be resolved: org.keycloak:keycloak-tomcat8-adapter:jar:1.6.0.Final-SNAPSHOT, org.keycloak:keycloak-jetty92-adapter:jar:1.6.0.Final-SNAPSHOT: Could not find artifact org.keycloak:keycloak-tomcat8-adapter:jar:1.6.0.Final-SNAPSHOT in jboss ( http://repository.jboss.org/nexus/content/groups/public/) -> [Help 1] Anyone has idea as to why this is happening. Thanks in advance.