The page crashed after click back button

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.4.13 DXP U53, 7.4.3.53 CE GA53, Master
• Component/s: Pages > Pages Tree
• Labels:
  • 7.4.13-u53
• Fix Priority: 3
• Git Pull Request: https://github.com/liferay-echo/liferay-portal/pull/10381
• Bug Type: Default

Step to reproduce:

1. Add a new site
2. Add a widget page
3. Navigate to the widget page
4. Navigate to the Page Tree
5. Add a child widget page
6. Expand the parent page
7. Click the back button on control menu

Expected Results:
It should redirect to the parent page.

Actual Results:
The page crashed.

Reproduced on:
Tomcat 9.0.65 + MySQL 5.7. Portal master GIT ID: 64c44d3bc4029fe95db0b1075e02ff52211af987.