error or starting server about phoenix-trello

[VanAxe]

Could you provide some more information on your setup? It seems you're facing a nodejs / npm problem.

Could you provide your OS version, node version and npm version? Are you using nvm?

Also, you should avoid running sudo npm install but favor npm install in your work directory. sudo npm install should be reserved for install global packages only.

You can also have a look at this guide from a helpful user and this guide from the npm docs on how to deal with permissions for globally installed packages.

[Bad-ptr]

I fixed this by adding the

var Promise = require('es6-promise').Promise;
//Or  require('es6-promise').polyfill();

to the webpack.config.js
// or to the node_modules/postcss/lib/lazy-result.js )