How to Solve Swagger Always Displays “basic-error-controller” Issue

The main reason is that the controller is not scanned in the swagger configuration, Here is the solution below:

public Docket createRestApi(){
    return new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))
                .build();
}

apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))

Indicates that swagger will scan the interface with @API.

Done!