Viewing an ADP via Friendly URL in Non-Guest Site Breaks Fragments Editor Preview

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.1.0 Beta 2, Master
• Fix Version/s: 7.1.0 Beta 3, 7.1.X, Master
• Component/s: Fragment Administration, Page Templates > Display Page Templates
• Labels: None
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/59399

Description
Caused by LPS-81331, viewing a ADP's friendly URL in non-guest site breaks Fragment Previews

Steps to Reproduce

1. Go to Non-Guest Site
2. Publish a Valid Display page with Web Content Article > Basic Web Content and set asset to be mapped
3. Create a WC and set your Asset Display Page as the Display Page
4. Navigate to Friendly URL
5. Navigate to Site Admin > Build > Fragments
6. Create a Fragment

Expected Result
Fragment Preview shows up without errors

Actual Result
Internal Service Error Occurs

Reproduced on:
Tomcat 9.0.6 + MySQL 5.7
Portal master GIT ID: ff1a3206be4f16e4173b5bfb1725c61635bd0f89