I have the same error. Failure to find org.wicketstuff:wicket-extjs:jar:0.29.0 in https://maven.onehippo.com/maven2/
commands :
mvn org.apache.maven.plugins:maven-archetype-plugin:2.4:generate -DarchetypeRepository=https://maven.onehippo.com/maven2 -DarchetypeGroupId=org.onehippo.cms7 -DarchetypeArtifactId=hippo-project-archetype -DarchetypeVersion=15.0.0
mvn clean verify
The same file is required for 15.1.0 and build returns the same error.
@PCentgraf wrote “Both the enterprise and community release artifacts are now available in the Bloomreach Maven repository.”