Generator fails on simple input

[Pzixel]

Openapi.yaml

x-generator: NSwag v13.3.0.0 (NJsonSchema v10.1.11.0 (Newtonsoft.Json v12.0.0.0))
openapi: 3.0.0
info:
  title: Settings API
  description: Settings and presets service
  version: v1
servers:
  - url: 'https://myUrl'
paths:
  /:
    get:
      tags:
        - About
      operationId: About_Get
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MessageModel'
  /settings/api:
    get:
      tags:
        - About
      operationId: About_Get2
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MessageModel'
  /Healthcheck:
    get:
      tags:
        - Healthcheck
      operationId: Healthcheck_Get
      responses:
        '200':
          description: ''
  /settings/api/Healthcheck:
    get:
      tags:
        - Healthcheck
      operationId: Healthcheck_Get2
      responses:
        '200':
          description: ''
components:
  schemas:
    MessageModel:
      type: object
      additionalProperties: false
      properties:
        message:
          type: string
          nullable: true
    Integration:
      type: object
      additionalProperties: false
      properties:
        id:
          type: string
          format: guid
        createdBy:
          type: string
          format: guid
        createdOn:
          type: string
          format: date-time
        modifiedBy:
          type: string
          format: guid
          nullable: true
        modifiedOn:
          type: string
          format: date-time
          nullable: true
        deletedReason:
          type: string
          nullable: true
        deletedBy:
          type: string
          format: guid
          nullable: true
        deletedOn:
          type: string
          format: date-time
          nullable: true
        companyId:
          type: string
          format: guid
        title:
          type: string
          nullable: true
  securitySchemes:
    Bearer:
      type: apiKey
      description: Please insert Auth token into field
      name: Authorization
      in: header
security:
  - Bearer: []

Command:

cargo-swagg ./openapi.yaml --out-file ./src/api.rs

Expected result:

Got API

Actual result:

#![allow(dead_code, unused_imports)]
pub mod api {
    #[doc = "Settings and presets service"]
    pub struct SettingsApi {
        api: actix_swagger::Api,
    }
    impl SettingsApi {
        pub fn new() -> Self {
            Self {
                api: actix_swagger::Api::new(),
            }
        }
    }
    impl Default for SettingsApi {
        fn default() -> Self {
            let api = Self::new();
            api
        }
    }
    impl actix_web::dev::HttpServiceFactory for SettingsApi {
        fn register(self, config: &mut actix_web::dev::AppService) {
            self.api.register(config);
        }
    }
    use super::paths;
    use actix_swagger::{Answer, Method};
    use actix_web::{dev::Factory, FromRequest};
    use std::future::Future;
    impl SettingsApi {}
}
pub mod components {
    pub mod parameters {
        use serde::{Deserialize, Serialize};
    }
    pub mod request_bodies {
        use serde::{Deserialize, Serialize};
    }
    pub mod responses {
        use serde::{Deserialize, Serialize};
    }
}
pub mod paths {
    use super::components::{parameters, responses};
}