Unable to export site pages with circular references

Issue

• When trying to export pages, a null error is shown in the UI.

Environment

• Liferay DXP 7.4 (equal to or below Update 66)

Resolution

• Upgrade to Liferay DXP 7.4 Update 66 or higher to resolve the issue.
• Or request a hotfix with the following: LPS-157420

Additional Information

• Updating the Patching Tool
• Installing Fix Packs and Hotfixes on Liferay DXP