logger upgraded, session server status upgraded

app.js

@@ -9,7 +9,7 @@ const {port} = require('./config')
 const app = require('express')()
 const helmet = require('helmet')
 const routes = require('./src/routes')
-const { errors } = require('celebrate')
+const {errors} = require('celebrate')
 const body_parser = require('body-parser')
 const {request_logger, error_logger} = require('./src/middlewares/logger')
 const {options, cors} = require('./src/middlewares/cors')