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I am using 'org.springdoc:springdoc-openapi-webflux-ui:1.2.28' library to show swagger UI API documentation in my spring-boot app. http://localhost:8080/swagger-ui.html does not work, it returns:

Whitelabel Error Page
This application has no configured error view, so you are seeing this as a fallback.

Fri Jan 24 11:31:02 UTC 2020
[b0282788] There was an unexpected error (type=Not Found, status=404).
No matching handler

shortly this problem: How to display app API documentation by using springdoc-openapi-webflux-ui?

And I found a cause of that. Predicate field of RouterFunctions.DefaultRouterFunction<T extends ServerResponse> class sometimes gets DefaultErrorWebExceptionHandler as an value of this object:

enter image description here

Seydazimov Nurbol
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1 Answers1

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You might be using @EnableWebFlux. You description seems similar to this issue: