Error when building branch 2.3: Could not resolve dependencies for project org.apache.ranger:ranger-solr-plugin:jar

I'm trying to build the branch ranger-2.3 with the maven command mvn clean compile package install -DskipJSTests. The command failed when building SOLR Security Plugin with the following error message:

[ERROR] Failed to execute goal on project ranger-solr-plugin: Could not resolve dependencies for project org.apache.ranger:ranger-solr-plugin:jar:2.3.0: Failed to collect dependencies at org.apache.solr:solr-core:jar:7.7.1 -> org.restlet.jee:org.restlet:jar:2.3.0: Failed to read artifact descriptor for org.restlet.jee:org.restlet:jar:2.3.0: Could not transfer artifact org.restlet.jee:org.restlet:pom:2.3.0 from/to maven-default-http-blocker (http://0.0.0.0/): Blocked mirror for repositories: [maven-restlet (http://maven.restlet.org, default, releases+snapshots), apache.snapshots (http://repository.apache.org/snapshots, default, disabled)] -> [Help 1]

I'm using maven 3.8 with openjdk8. I'm also having the same problem with Release 2.2.0.

Could someone help me take a look at what I missed? Also, is there a place where I can download the prepackaged jars, instead of me building from the source code? Thanks.

Looks like solr is not able to pull org.restlet.jee:org.restlet:pom:2.3.0. Adding below repository fixed the issue for me;

    <repository>
        <id>maven-restlet</id>
        <name>Public online Restlet repository</name>
        <url>https://maven.restlet.talend.com/</url>
    </repository>

You can find more details here Restlet Maven Dependencies.