Discord bot not starting with @discordjs/opus Discord.js?

Question

Node.js

-----> 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 12.19.0...
       Using default npm version: 6.14.8
       
-----> Installing dependencies
       Prebuild detected (node_modules already exists)
       Rebuilding any native modules
       
       > @discordjs/[email protected]0.3.3 install /tmp/build_674ce019_/node_modules/@discordjs/opus
       > node-pre-gyp install --fallback-to-build
       
       sh: 1: node-pre-gyp: Permission denied
       npm ERR! code ELIFECYCLE
       npm ERR! errno 126
       npm ERR! @discordjs/[email protected]0.3.3 install: `node-pre-gyp install --fallback-to-build`
       npm ERR! Exit status 126
       npm ERR! 
       npm ERR! Failed at the @discordjs/[email protected]0.3.3 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.vLvdW/_logs/2020-11-02T11_20_24_921Z-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

@discordjs/opus version - 0.3.3

How to solve this problem?

Answer 1

Try adding the
APP package -> Settings -> Buildpacks -> add Buildpack -> nodejs
in the Heroku app settings yourself.

Answer 2

npm i opusscript