title: No API definition provided. - openApi - springdoc
body: <p>I have a simple boot application where I have added open api swagger dependency</p>
  <pre><code>springdoc-openapi-ui
  </code></pre>
  <p>along with these properties</p>
  <pre><code>springdoc.swagger-ui.disable-swagger-default-url=true
  springdoc.swagger-ui.configUrl=/v3/api-docs/swagger-config
  springdoc.swagger-ui.path=/swagger-ui.html
  </code></pre>
  <p>I am getting these error (when calling http://localhost:8080/swagger-ui/index.html):</p>
  <pre><code>No API definition provided.
  </code></pre>
  <p>this is my controller :</p>
  <pre><code>@RestController
  public class HelloWorld {
  
  @GetMapping(&quot;sayHi&quot;)
  public String sayHi(){
      return &quot;Hi Beno&quot;;
  }
  }
  </code></pre>
  <p>Any idea ?</p>