Cannot select child site from site selector

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.3.X, Master
• Component/s: Navigation Widgets > My Sites widget
• Labels: None
• Branch Version/s:
  7.3.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/liferay-echo/liferay-portal/pull/2551

Steps to reproduce

• Go to Apps menu -> Sites
• Create a child site from Liferay site
• Go to Site Selector
• Go to "My Sites"
• Click child sites

Expected result

A page to select child pages is displayed

Actual result

The page is redirected to http://localhost:8080/web/undefined