cmd.run in lifecycle hooks strapi

Code below working on development mode, but in production, it throws premission error

CMS: Strapi.io

'use strict';

/**
 * Read the documentation (https://strapi.io/documentation/v3.x/concepts/models.html#lifecycle-hooks)
 * to customize this model
 */

const cmd = require('node-cmd');

module.exports = {
  lifecycles: {
    afterCreate() {
      cmd.run('cd /var/www/example.com/html && npm run build');
    },
    afterUpdate() {
        cmd.run('cd /var/www/example.com/html && npm run build');
    },
    afterDelete() {
      cmd.run('cd /var/www/example.com/html && npm run build');
    },
  },
};

Error:

> [email protected] build /var/www/siteName/html 
> gatsby build success open and validate gatsby-configs -
0.067s success load plugins - 1.140s success onPreInit -
 0.064s success delete html and css files from previous builds - 
0.016s [0m [0m [0m [97m [41mError [0m [37m [41m: [0m [37m [41m
 [0m [97m [41m
EACCES: permission denied, rmdir '/var/www/siteName/html/.cac 
[0m [0m [97m [41mhe/webpack' 
[0m [0m success initialize cache - 0.048s [0m [0m [0m [97m [41m
Error [0m [37m [41m: [0m [37m [41m [0m [97m [41mE
ACCES: permission denied, unlink '/var/www/siteName/html/.ca 
[0m [0m [97m [41mche/strip-prefix.js' [0m [0m 
not finished copy gatsby files - 0.015s