Missing connector to Red Hat Application Migration Toolkit

eclipse.buildId=12.10.0.AM1-v20181129-0845-B3670
java.version=1.8.0_191
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Framework arguments:  -product com.jboss.devstudio.core.product
Command-line arguments:  -os linux -ws gtk -arch x86_64 -product com.jboss.devstudio.core.product

org.jboss.tools.discovery.core
Error
Tue Dec 04 08:58:44 CET 2018
Problems occurred while performing installation: The following connectors are not available: Red Hat Application Migration Toolkit (id=org.jboss.tools.windup.feature.feature.group, site=http://download.jboss.org/jbosstools/photon/stable/updates/rhamt/)

org.eclipse.core.runtime.CoreException: The following connectors are not available: Red Hat Application Migration Toolkit (id=org.jboss.tools.windup.feature.feature.group, site=http://download.jboss.org/jbosstools/photon/stable/updates/rhamt/)
	at org.jboss.tools.discovery.core.internal.connectors.PrepareInstallProfileJob.checkForUnavailable(PrepareInstallProfileJob.java:374)
	at org.jboss.tools.discovery.core.internal.connectors.PrepareInstallProfileJob.computeInstallableUnits(PrepareInstallProfileJob.java:284)
	at org.jboss.tools.discovery.core.internal.connectors.PrepareInstallProfileJob.run(PrepareInstallProfileJob.java:116)
	at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)