"API Error: Failed to get management cluster" appears when logging into TMC-SM

Products

• VMware Tanzu Mission Control - SM

Issue/Introduction

The following error banner appears in the TMC-SM UI:

"API Error: Failed to get management cluster: Internal Server Error: please try again later (internal error)"

Environment

Tanzu Mission Control Self-Managed v1.4.3 or earlier

Cause

A UI bug causes the browser's background process to continue polling for status updates even after the cluster starts successfully.
If a temporary network or backend interruption occurs during this background communication, the UI detects it and displays the error banner.

Resolution

Although the error banner appears on the screen, it does not affect actual functionality. 

If the error banner appears, use one of the following methods to clear it:

• Refresh the page: Reloading the browser page will remove the banner.
• Close the banner: Click the "X" icon in the top-right corner of the banner.

This issue will be fixed in a future release. The exact release schedule is currently undetermined.
To receive updates on the fix status for this issue, please subscribe to this article (reference: KB 275360).