Deploying in heroku

[s2krish]

I have some issue with deploying in heroku. I got following error (Full error log is below at the end):

module.js:340
    throw err;
          ^
Error: Cannot find module 'promise'
    at Function.Module._resolveFilename (modul

For the time being, I have used less.js.

Full error message:

Running python manage.py compress --force on ⬢ timepro2... up, run.9827
Found 'compress' tags in:
    /app/timepiece/templates/timepiece/project/create_edit.html
    /app/templates/registration/password_reset_form.html
    /app/templates/registration/password_change_form.html
    /app/timepiece/templates/timepiece/entry/clock_out.html
    /app/timepiece/templates/timepiece/schedule/view.html
    /app/timepiece/templates/timepiece/quick_search.html
    /app/templates/registration/password_change_done.html
    /app/timepiece/templates/timepiece/business/view.html
    /app/timepiece/templates/timepiece/entry/clock_in.html
    /app/timepiece/templates/timepiece/base.html
    /app/timepiece/templates/timepiece/user/settings.html
    /app/timepiece/templates/timepiece/reports/payroll_summary.html
    /app/timepiece/templates/timepiece/relationship/delete.html
    /app/timepiece/templates/timepiece/schedule/edit.html
    /app/timepiece/templates/timepiece/entry/create_edit.html
    /app/timepiece/templates/timepiece/project/base.html
    /app/timepiece/templates/timepiece/invoice/list.html
    /app/timepiece/templates/timepiece/business/list.html
    /app/timepiece/templates/timepiece/invoice/view_entries.html
    /app/timepiece/templates/timepiece/project/view.html
    /app/timepiece/templates/timepiece/invoice/create.html
    /app/timepiece/templates/timepiece/contract/base.html
    /app/timepiece/templates/timepiece/business/create_edit.html
    /app/timepiece/templates/timepiece/contract/view.html
    /app/timepiece/templates/timepiece/invoice/delete.html
    /app/timepiece/templates/timepiece/reports/estimation_accuracy.html
    /app/timepiece/templates/timepiece/reports/hourly.html
    /app/timepiece/templates/timepiece/project/list.html
    /app/timepiece/templates/timepiece/reports/base.html
    /app/timepiece/templates/timepiece/schedule/base.html
    /app/timepiece/templates/timepiece/user/base.html
    /app/timepiece/templates/timepiece/user/create_edit.html
    /app/timepiece/templates/timepiece/user/view.html
    /app/timepiece/templates/timepiece/user/timesheet/reject.html
    /app/templates/registration/password_reset_done.html
    /app/timepiece/templates/timepiece/entry/delete.html
    /app/timepiece/templates/timepiece/project/timesheet.html
    /app/templates/registration/login.html
    /app/timepiece/templates/timepiece/entry/reject.html
    /app/timepiece/templates/timepiece/business/base.html
    /app/timepiece/templates/timepiece/user/timesheet/view.html
    /app/templates/500.html
    /app/timepiece/templates/timepiece/invoice/delete_entry.html
    /app/templates/registration/password_reset_confirm.html
    /app/timepiece/templates/timepiece/invoice/outstanding.html
    /app/timepiece/templates/timepiece/reports/productivity.html
    /app/timepiece/templates/timepiece/invoice/view.html
    /app/timepiece/templates/timepiece/dashboard.html
    /app/timepiece/templates/timepiece/delete_object.html
    /app/timepiece/templates/timepiece/contract/list.html
    /app/timepiece/templates/timepiece/user/list.html
    /app/templates/404.html
    /app/timepiece/templates/timepiece/invoice/base.html
    /app/timepiece/templates/timepiece/reports/billable_hours.html
    /app/templates/registration/password_reset_complete.html
    /app/timepiece/templates/timepiece/relationship/edit.html
    /app/timepiece/templates/timepiece/invoice/edit.html
    /app/timepiece/templates/timepiece/user/timesheet/change.html
Compressing... CommandError: An error occurred during rendering /app/timepiece/templates/timepiece/project/create_edit.html: 
module.js:340
    throw err;
          ^
Error: Cannot find module 'promise'
    at Function.Module._resolveFilename (module.js:338:15)
    at Function.Module._load (module.js:280:25)
    at Module.require (module.js:362:17)
    at require (module.js:378:17)
    at Object.module.exports.render (/app/.heroku/python/lib/node_modules/less/lib/less/render.js:12:71)
    at parseLessFile (/app/.heroku/python/lib/node_modules/less/bin/lessc:459:14)
    at fs.readFile (fs.js:176:14)
    at Object.oncomplete (fs.js:297:15)

less installation log:

remote: -----> Running install_lessc
remote: npm http GET https://registry.npmjs.org/less
remote: npm http 200 https://registry.npmjs.org/less
remote: npm http GET https://registry.npmjs.org/less/-/less-2.7.1.tgz
remote: npm http 200 https://registry.npmjs.org/less/-/less-2.7.1.tgz
remote: npm WARN engine [email protected]: wanted: {"node":">=0.12"} (current: {"node":"v0.8.12","npm":"1.1.63"})
remote: npm http GET https://registry.npmjs.org/errno
remote: npm http GET https://registry.npmjs.org/graceful-fs
remote: npm http GET https://registry.npmjs.org/image-size
remote: npm http GET https://registry.npmjs.org/mime
remote: npm http GET https://registry.npmjs.org/mkdirp
remote: npm http GET https://registry.npmjs.org/promise
remote: npm http GET https://registry.npmjs.org/source-map
remote: npm http 200 https://registry.npmjs.org/errno
remote: npm http 200 https://registry.npmjs.org/image-size
remote: npm http 200 https://registry.npmjs.org/mime
remote: npm http 200 https://registry.npmjs.org/graceful-fs
remote: npm http 200 https://registry.npmjs.org/mkdirp
remote: npm http 200 https://registry.npmjs.org/promise
remote: npm WARN optional dep failed, continuing errno@^0.1.1
remote: npm WARN optional dep failed, continuing mime@^1.2.11
remote: npm WARN optional dep failed, continuing graceful-fs@^4.1.2
remote: npm WARN optional dep failed, continuing mkdirp@^0.5.0
remote: npm WARN optional dep failed, continuing promise@^7.1.1
remote: npm http GET https://registry.npmjs.org/image-size/-/image-size-0.5.0.tgz
remote: npm http 200 https://registry.npmjs.org/source-map
remote: npm WARN optional dep failed, continuing source-map@^0.5.3
remote: npm http 200 https://registry.npmjs.org/image-size/-/image-size-0.5.0.tgz
remote: npm WARN engine [email protected]: wanted: {"node":">=0.10.0"} (current: {"node":"v0.8.12","npm":"1.1.63"})
remote: /app/.heroku/python/bin/lessc -> /app/.heroku/python/lib/node_modules/less/bin/lessc
remote: [email protected] /app/.heroku/python/lib/node_modules/less