Load this in a browser:
You are prompted to save a file. Saving this file on a local machine takes about 15 seconds. When it is done, all this file contains is this text:
redirect to proper swagger-ui url of http://localhost:8081/swagger-ui/#/ and load that instead.
Users are not going to anticipate /swagger-ui/#/ and are going to frequently type /swagger-ui and expect something more useful to happen. When it doesn't, they will file support questions.