installation problems due to missing dependency

I am getting the following error message while trying to install the developer version of AF3 (following this instructions: https://git.fortiss.org/af3/af3/-/wikis/AF3_Developer_Installation)

org.eclipse.core.runtime.CoreException: Cannot complete the install because one or more required items could not be found. at org.eclipse.oomph.util.OomphPlugin.coreException(OomphPlugin.java:280) at org.eclipse.oomph.p2.internal.core.ProfileTransactionImpl.resolve(ProfileTransactionImpl.java:426) at org.eclipse.oomph.p2.internal.core.ProfileTransactionImpl.commit(ProfileTransactionImpl.java:338) at org.eclipse.oomph.setup.ui.EnablementComposite$5.run(EnablementComposite.java:316) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Contains: Software being installed: artificial_root 1.0.0.v1611869389444 Contains: Missing requirement: unzip Setup Task 1.0.0.201612071748 (com.github.maybeec.oomph.task.unzip 1.0.0.201612071748) requires 'osgi.bundle; org.junit 0.0.0' but it could not be found Contains: Cannot satisfy dependency: Contains: From: artificial_root 1.0.0.v1611869389444 Contains: To: org.eclipse.equinox.p2.iu; com.github.maybeec.oomph.task.unzip.feature.feature.group 0.0.0 Contains: Cannot satisfy dependency: Contains: From: unzip Setup Task 1.0.0.201612071748 (com.github.maybeec.oomph.task.unzip.feature.feature.group 1.0.0.201612071748) Contains: To: org.eclipse.equinox.p2.iu; com.github.maybeec.oomph.task.unzip [1.0.0.201612071748,1.0.0.201612071748]

It seems to be an oomph-task-unzip issue, that's at least what I understood from this issue: https://github.com/maybeec/oomph-task-unzip/issues/17

Is there something we can do on our side? Or maybe there is a workaround?