heroku build error permission denied

[NismoGraphics]

please help me
error:

remote:
node-pre-gyp install --fallback-to-build
remote:
remote: sh: 1: node-pre-gyp: Permission denied
remote: npm ERR! code ELIFECYCLE
remote: npm ERR! errno 126
remote: npm ERR! [email protected] install: node-pre-gyp install --fallback-to-build
remote: npm ERR! Exit status 126
remote: npm ERR!
remote: npm ERR! Failed at the [email protected] install script.
remote: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
remote:
remote: npm ERR! A complete log of this run can be found in:
remote: npm ERR! /tmp/npmcache.39gEe/_logs/2018-12-24T14_09_53_348Z-debug.log
remote:
remote: -----> Build failed
remote:
remote: We're sorry this build is failing! You can troubleshoot common issues here:
remote: https://devcenter.heroku.com/articles/troubleshooting-node-deploys
remote:
remote: Some possible problems:
remote:
remote: - node_modules checked into source control
remote: https://blog.heroku.com/node-habits-2016#9-only-git-the-important-bits
remote:
remote: - Node version not specified in package.json
remote: https://devcenter.heroku.com/articles/nodejs-support#specifying-a-node-js-version
remote:
remote: Love,
remote: Heroku
remote:
remote: ! Push rejected, failed to compile Node.js app.
remote:
remote: ! Push failed
remote: Verifying deploy...
remote:
remote: ! Push rejected to *****.
remote:
To https://git.heroku.com/****.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/*****.git'