RCPTT failed to launch in eclipse 4.23: Missing implementation of resolved method 'abstract getModels()' of abstract class LaunchValidationOperation

Question

Missing implementation of resolved method 'abstract java.util.Set getModels()' of abstract class org.eclipse.pde.internal.launching.launcher.LaunchValidationOperation

I am getting this error when I try to run RCPTT on Eclipse 4.23:

java.lang.AbstractMethodError: Missing implementation of resolved method 'abstract java.util.Set getModels()' of abstract class org.eclipse.pde.internal.launching.launcher.LaunchValidationOperation.
    at org.eclipse.pde.internal.launching.launcher.LaunchValidationOperation.run(LaunchValidationOperation.java:50)
    at org.eclipse.rcptt.launching.internal.target.TargetPlatformHelper.validateBundles(TargetPlatformHelper.java:480)
    at org.eclipse.rcptt.launching.internal.target.TargetPlatformHelper.resolve(TargetPlatformHelper.java:562)
    at org.eclipse.rcptt.launching.configuration.Q7LaunchConfigurationDelegate.preLaunchCheck(Q7LaunchConfigurationDelegate.java:149)
    at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:767)
    at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:716)
    at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:1021)
    at org.eclipse.debug.internal.ui.DebugUIPlugin$2.run(DebugUIPlugin.java:1224)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)