[BUG] Default nodejs-express-server generation not runnable in default express: error: undefined {"service":"user-service"}

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• What's the version of OpenAPI Generator used?
• Have you search for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Bounty to sponsor the fix (example)

Description

cannot run the default stub of nodejs-express-server.
it creates a logger.js with winston and a user-service, which is not handled in the stub.
the output of npm is

 error: undefined {"service":"user-service"}
 error: undefined {"service":"user-service"}

caused by created logger.js

const winston = require('winston');

const logger = winston.createLogger({
  level: 'info',
  format: winston.format.json(),
  defaultMeta: { service: 'user-service' },
  transports: [
    new winston.transports.File({ filename: 'error.log', level: 'error' }),
    new winston.transports.File({ filename: 'combined.log' }),
  ],
});

if (process.env.NODE_ENV !== 'production') {
  logger.add(new winston.transports.Console({ format: winston.format.simple() }));
}

module.exports = logger;

openapi-generator version

openapitools/openapi-generator-cli:v4.2.3

OpenAPI declaration file content or url

openapi: '3.0.2'
info:
  title: Tree
  description: "d3vopz open api spec for tree operations"
  termsOfService: /terms-of-use
  version: '0.0.0'
  contact:
    name: "Tree API"
    url: "https://d3vopz.net/api"
    email: "d3vopz.net@gmail.com"
  license:
    name: "Don't use ;)"
    url: "https://d3vopz.net/license"
externalDocs: # Relative URL to external documentation
  url: /docs
  description: Find more info here
servers:
#  - url: '{protocol}://{environment}.{host}/v{versionId}{versionStage}{versionStageId}'
  - url: '{protocol}://{environment}.{host}/v{versionId}{versionStage}{versionStageId}'
    variables:
      protocol:
        enum:
          - http
          - https
        default: https
      environment:
        default: api    # Production server
        enum:
          - api         # Production server
          - api.dev     # Development server
          - api.staging # Staging server
      host:
        default: localhost # local server
#      versionId:
#        default: "1"   # 1st
#      versionStage:
#        default: ""    # stable
#        enum:
#          - ""         # stable stage
#          - "alpha"    # alpha stage
#          - "beta"     # beta stage
#      versionStageId:
#        default: ""    # stable (empty)
paths:
  /tree:
    get:
      tags:
      - Current tree data
      summary: "Call current node data."
      description: "Cet current node data."
      operationId: CurrentNodeData
      parameters:
      - name: idx
        in: query
        description: "nodes idx"
        schema:
          type: integer
          format: int64
      responses:
        200:
          description: Successful response
          content:
            application/json:
              schema:
                title: Sample
                type: object
                properties:
                  placeholder:
                    type: string
                    description: Placeholder description
        404:
          description: Not found response
          content:
            text/plain:
              schema:
                title: Node not found
                type: string
                example: Not found

Command line used for generation

create the stub with:
openapitools/openapi-generator-cli:v4.2.3 generate -i /local/openapi.yml -g nodejs-express-server -o /local/out/nodejs-express-server

running the stub in
npm --prefix /data start
where /data contains the stub

Steps to reproduce

see command line

Related issues/PRs

Did not find a similiar issue

Suggest a fix

providing an example how to get it simple running with winston or disable complex winston log as default? idk

Start with the generated logger.js and the nodejs-express-server output produced by the command in the issue. Reproduce it with OpenAPI Generator v4.2.3 and npm --prefix /data start, then determine whether the default Winston setup or the generated stub causes the error. Done means the default generated server starts without the reported error.