Error on windows machine

[RupeshThakur11]

C:\Users\Vivek Singh\Desktop\mongodb-redis-cache>node index.js
C:\Users\Vivek Singh\Desktop\mongodb-redis-cache\access.js:38
module.exports.access.updateBookByTitle = function(db, redis, title, newText, callback) {
^

TypeError: Cannot set property 'updateBookByTitle' of undefined
at Object. (C:\Users\Vivek Singh\Desktop\mongodb-redis-cache\access.js:38:41)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object. (C:\Users\Vivek Singh\Desktop\mongodb-redis-cache\index.js:11:14)
at Module._compile (module.js:570:32)