How to read swagger documentation from yaml file?

Question

Java

I have a small spring boot application and I want to create documentation for it in a yaml file and refer to it. To do this, I created a config class:

@Configuration
public class SwaggerSpecConfig {

@Primary
@Bean
public SwaggerResourcesProvider swaggerResourcesProvider(InMemorySwaggerResourcesProvider defaultResourcesProvider) {
    return () -> {
        SwaggerResource wsResource = new SwaggerResource();
        wsResource.setName("Bank Swagger Spec");
        wsResource.setSwaggerVersion("3.0");
        wsResource.setLocation("/swagger_specs/BankSwagger.yaml");

        List<SwaggerResource> resources = new ArrayList<>(defaultResourcesProvider.get());
        resources.add(wsResource);
        return resources;
    };
}

Added a dependency file to the pom:

<dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-boot-starter</artifactId>
        <version>3.0.0</version>
    </dependency>

    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>3.0.0</version>
    </dependency>

The swagger file is on the path:
src/main/resources/swagger_specs/BankSwagger.yaml

When I start, I get an error:

What could be the problem?
I’ll say in advance that the application starts normally and creates auto-documentation without any problems, but there is an error with reading