Error: EACCES: permission denied, open .audit.json - node.js

Question

I was trying to implement the winston logger along with winston-daily-rotate-file in my angular application with node.js.
code worked fine in local windows environment, but while i was moving to higher env in linux, I am getting the below permission error while starting my application by executing "node server.js"
Please help whether issue is with permission or something else
'[FileStreamRotator] Failed to store log audit at:' '//.audit.json' 'Error:' { Error: EACCES: permission denied, open '//.audit.json'
at Object.fs.openSync (fs.js:646:18)
at Object.fs.writeFileSync (fs.js:1299:33)
at Object.FileStreamRotator.writeAuditLog (/apps/app/node_modules/file-stream-rotator/FileStreamRotator.js:244:12)
at Object.FileStreamRotator.addLogToAudit (/apps/app/node_modules/file-stream-rotator/FileStreamRotator.js:318:27)
at EventEmitter.<anonymous> (/apps/app/node_modules/file-stream-rotator/FileStreamRotator.js:432:34)
at emitOne (events.js:116:13)
at EventEmitter.emit (events.js:211:7)
at /apps/app/node_modules/file-stream-rotator/FileStreamRotator.js:478:20
at _combinedTickCallback (internal/process/next_tick.js:131:7)
at process._tickCallback (internal/process/next_tick.js:180:9)
errno: -13,
code: 'EACCES',
syscall: 'open',
path: '//.audit.json' }
part of Server.js
const winston = require('winston');
const winstonRotator = require('winston-daily-rotate-file');
const { combine, timestamp, label, printf } = winston.format;
var rotatorOptions = {
level: 'info',
filename: './logs/app-%DATE%.log',
datePattern: 'MM-DD-YYYY',
handleExceptions: true,
zippedArchive: false,
maxsize: '10m',
maxFiles: '15d',
};
const logger =winston.createLogger({
format: combine(
label({ label: 'APP' }),
timestamp(),
printf(info => {return `${info.timestamp} [${info.label}] ${info.level}:
${info.message}`; })
),
'transports': [ new winstonRotator(rotatorOptions) ]
});
OS : Red Hat Enterprise Linux Server release 7.5 (Maipo)