# Package com.holonplatform.vaadin.flow.navigator.exceptions

- Exception Summary
  Exception | Description
  --- | ---
  ForbiddenNavigationException | Exception used to notify a forbidden navigation target error, when the user does not have the required authorizations to access a navigation target.
  InvalidNavigationParameterException | Exception to notify invalid navigation parameter values.
  NavigationTargetConfigurationException | Exception to notify navigation target class configuration errors.
  UnauthorizedNavigationException | Exception used to notify an unauthorized navigation target error, when user authentication is required but not available.

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