Having an issue with 'npm install -g create-react-app' command!

This is the Error Massage! Can anybody help me?

npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules

npm ERR! code EACCES

npm ERR! syscall access

npm ERR! path /usr/local/lib/node_modules

npm ERR! errno -13

npm ERR! Error: EACCES: permission denied, access ‘/usr/local/lib/node_modules’

npm ERR! [Error: EACCES: permission denied, access ‘/usr/local/lib/node_modules’] {

npm ERR! errno: -13,

npm ERR! code: ‘EACCES’,

npm ERR! syscall: ‘access’,

npm ERR! path: ‘/usr/local/lib/node_modules’

npm ERR! }

npm ERR!

npm ERR! The operation was rejected by your operating system.

npm ERR! It is likely you do not have the permissions to access this file as the current user

npm ERR!

npm ERR! If you believe this might be a permissions issue, please double-check the

npm ERR! permissions of the file and its containing directories, or try running

npm ERR! the command again as root/Administrator.

npm ERR! A complete log of this run can be found in:

npm ERR! /Users/sunethfernando/.npm/_logs/2020-09-03T14_22_55_442Z-debug.log

Hi Suneth @code8087718124 and welcome to forums!

your system is not recognizing you as an administrator. so it can not install / create your app.