ZStack Cloud UI displays a blank page and the UI service is abnormal

Issue

Use this article to troubleshoot a UI blank page or reverse-proxy port conflict.

Environment

• Product: ZCF
• Component: Cloud
• Affected object: UI/nginx
• Versions: 4.x, 5.x
• Scenario: UI blank page or reverse-proxy port conflict

Symptoms

• The UI displays a blank page, remains loading, cannot open part of a page, or returns an API exception.