Failed to execute goal on project testopenie

[Ahmedn1]

I'm running the installation steps on Ubuntu 16.04

Everything runs fine until the mvn clean install step of the REST-Graphene repo

I get this:

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building testopenie 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for org.lambda3.graphene:graphene-core:jar:3.0.0-SNAPSHOT is missing, no dependency information available
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.804 s
[INFO] Finished at: 2019-04-18T15:39:12+02:00
[INFO] Final Memory: 7M/95M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project testopenie: Could not resolve dependencies for project testopenie:testopenie:jar:0.0.1-SNAPSHOT: Could not find artifact org.lambda3.graphene:graphene-core:jar:3.0.0-SNAPSHOT -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException