Failed at the canvas@2.6.1 install script. - Heroku

-----> Node.js app detected

-----> Creating runtime environment

NPM_CONFIG_LOGLEVEL=error
NODE_ENV=production
NODE_MODULES_CACHE=true
NODE_VERBOSE=false

-----> Installing binaries
engines.node (package.json): unspecified
engines.npm (package.json): unspecified (use default)

Resolving node version 12.x...
Downloading and installing node 12.20.1...
Using default npm version: 6.14.10

-----> Restoring cache
Cached directories were not restored due to a change in version of node, npm, yarn or stack
Module installation may take longer for this build

-----> Installing dependencies
Prebuild detected (node_modules already exists)
Rebuilding any native modules

> canvas@2.6.1 install /tmp/build_16b697e8_/node_modules/canvas
> node-pre-gyp install --fallback-to-build

sh: 1: node-pre-gyp: Permission denied
npm ERR! code ELIFECYCLE
npm ERR! errno 126
npm ERR! canvas@2.6.1 install: `node-pre-gyp install --fallback-to-build`
npm ERR! Exit status 126
npm ERR!
npm ERR! Failed at the canvas@2.6.1 install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! /tmp/npmcache.Wra6d/_logs/2021-01-06T21_49_44_800Z-debug.log
-----> Build failed

We're sorry this build is failing! You can troubleshoot common issues here:
https://devcenter.heroku.com/articles/troubleshooting-node-deploys

Some possible problems:

- node_modules checked into source control
https://devcenter.heroku.com/articles/node-best-practices#only-git-the-important-bits

- Node version not specified in package.json
https://devcenter.heroku.com/articles/nodejs-support#specifying-a-node-js-version

Love,
Heroku

! Push rejected, failed to compile Node.js app.
! Push failed

canvas version: 2.6.1
node.js version: 15.0.1
This only happens when I try to push heroku, in my normal windows it works without problems.