This is probably related to having the wrong content dependency version in the build.

When selecting a page and clicking Delete action:
A red banner for an error appears and when visiting the error:
"An error ocurred while executing the action."
"Could not instantiate action class for action: confirmDeletion"

Stack trace shows:

Caused by: java.lang.NoSuchMethodError: info.magnolia.ui.framework.action.ConfirmationAction.<init>(Linfo/magnolia/ui/framework/action/ConfirmationActionDefinition;Linfo/magnolia/ui/vaadin/integration/jcr/JcrItemAdapter;Linfo/magnolia/ui/api/context/UiContext;Linfo/magnolia/ui/api/action/ActionExecutor;)V
at info.magnolia.module.dependencies.action.DependencyAwareConfirmationAction.<init>(DependencyAwareConfirmationAction.java:45)