Unable to use Swagger UI in Camunda 8 SM

Camunda 8 Topics
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1

According to the official docs, the section on Operate API (REST), it seems that we can make use of Swagger UI to play around with the API endpoints. I was able to find its URL. It was at http://[my-operate-base-url]/swagger-ui/index.html

What is wrong with it?

But when it is loaded, it says Failed to load remote configuration. and when I click on Explore it says:

Unable to render this definition

The provided definition does not specify a valid version field.

Please indicate a valid Swagger or OpenAPI version field. Supported version fields are swagger: "2.0" and those that match openapi: 3.x.y (for example, openapi: 3.1.0).